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Questions tagged [color]

color, colour, dye, hue, tint, shade, you name it

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2 answers
152 views

What do colors represent in Chassidus and Kabbalah

BH Is there a more deeper explanation to colors in Chassidus and Kabbalah? Like hidden meanings of different colors or more higher explanation of them in Seder hishtalshelut or in the spiritual levels?...
2 votes
1 answer
74 views

Is there a relationship between Alcohol and Tekhelet

Iirc Alcohol is from the Arabic word, but what is the root of the word? Is it Al-Kekhol? The All-Inclusive? Because per Tikune Zohar there are four primary colors (White, red, yarok -- light or mid ...
2 votes
1 answer
665 views

Are Jews allowed to wear clothing made from dyes from nonkosher animals or bugs?

If a garment is dyed using dye from bugs, is that kosher?
13 votes
6 answers
456 views

Does the colouring of animals depend on what the mother sees before conception?

What is the meaning of the strategies (hishtadlus) that Yaakov made with the conception of the animals starting at 30 (37)? Is it or was it a natural thing that the colouring of animals depends on ...
2 votes
1 answer
57 views

Can one remove the impurity of Tzara’at on a garment by dying it?

The Mishnah in Negaim 11:3 says that colored garments cannot become impure from signs of Tzara’at. The question is: if a plain garment already has signs of Tzara’at on it, if one dyed it afterwards, ...
2 votes
2 answers
277 views

Why is milk blue?

According to the "kosher color scheme" meat utensils are marked red, and dairy (milchig) is marked blue. Now, red for meat is quite understandable since meat is in fact red. But why should ...
4 votes
4 answers
465 views

Why is the colour כחול ('blue') not mentioned in Tanach?

The colour כחול is not mentioned in Tanach. Given its wide usage in later hebrew texts, why does it never feature in Tanach? Do any sources pick up on this? (There is a different debate about what ...
10 votes
3 answers
1k views

Blue Stripes on Tallis

I've read that tallit stripes were originally blue and at some point morphed to black. What I'm wondering is if anyone knows any oldsters who can attest to actually seeing this in the frum velt in ...
23 votes
7 answers
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Stripes on a Talis

Is there any reason for the stripes on a talis? Does the color of the stripes have any significance?
8 votes
6 answers
1k views

What color is Yarok?

Yarok ירוק in modern Hebrew means green. What color does it refer to in Mishnaic Hebrew? I have heard that it refers to yellow and not green because the Mishna in Sukkah (on 34b) discusses a citron ...
3 votes
5 answers
685 views

Where can I get dark blue Techelet for my tzizit and talit?

I want to buy some techelet and white tzizit. I want the techelet to match the color in this picture and to be made by Ptil Tekhelet foundation. However, when I try to contact them on their website I ...
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0 answers
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Is there anything wrong with coloring in a white spot on an esrog?

The Shaarei Teshuva seems to permit dying a semi dried out lulav. Why don't we find people doing such a thing to a white spot on an esrog? https://www.sefaria.org/Sha'arei_Teshuvah_on_Shulchan_Arukh%...
9 votes
3 answers
11k views

What was the general skin color of ancient Israelis?

There are lots of claims that ancient Israelis were black/brown/white or even east-asian looking? So which one is accurate is there any evidence from Torah or from other biblical resource?
5 votes
4 answers
416 views

If mixing red and blue thread for the Mishkan, why the purple thread too?

Throughout the construction of the Mishkan (Tabernacle) and Bigdei Kodesh (holy clothing for the Kohanim), they use a mix of red, blue, and purple wool (plus [white?] linen, and in the case of the ...
16 votes
2 answers
996 views

Is it permitted to use a thermochromic cup on Shabbos?

A novelty cup, see for example here, appears black when cold. When hot liquid is poured into it, the black changes to white and the previously concealed writing (underneath, so to speak) becomes ...
1 vote
0 answers
81 views

How to determine if one is disqualified for ruling on bedika cloths

Let's say a person is minorly colorblind, as they failed one or more of the Isihara Tests. How can they determine if they are disqualified for mareh's, examining bedika cloths? If they can see red and ...
6 votes
2 answers
2k views

Dyeing Hair for Men

Are men permitted to dye their hair with products such as "Just for Men"? Since these products are made for men specifically, would potential prohibitions of beged isha no longer apply?
10 votes
2 answers
1k views

Black? I ordered it dyed red!

The משנה in בבא קמא‎ (9:4, as explained by the רע״ב and קהתי) says that if I give wool to a dyer to dye red, and he dyes it black instead, then he must return the black wool to me, and I must pay him ...
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Can one take a lateral flow test on Shabbos?

DISCLAIMER: This is just halacha-theory and not searching for a p'sak Would taking a lateral flow test on Shabbos be absolutely forbidden due to the melacha of tzoveya - dyeing? After taking the swab ...
23 votes
7 answers
2k views

Why are there colored splotches on the pages on many Jewish texts?

On many editions of the Chumash, Talmud, and even many more-modern books, you look at the side of the book (opposite the spine) and there are random colored splotches printed on the pages. (For ...
11 votes
8 answers
543 views

Wearing photo gray glasses on Shabbos

In the question Pregancy Test on Shabbos a notion was raised in an answer that the chemical reaction is a problem due to tzovaya. So what are the boundaries of this, in terms of chemical reactions ...
4 votes
3 answers
2k views

Do tzitzit have to be white?

Based on this answer do tzitzit have to be white? Where is the source that they should be? I know that they are supposed to have at least one blue (techelet) string, but even that is disputed ...
4 votes
3 answers
3k views

Red/White wine at the Seder

Is there any Halacha or Minhag that specifies if red or White wine should be used for the four cups of wine during the Passover seder and does it matter what you use to spill out during the 10 plagues?...
1 vote
1 answer
87 views

Books about Ma'ros of Dam Nidda

I doubt that there are many but I am would be interested to know if there are any Sefarim written about the different colors of blood which render a women impure which are available to the public. I ...
18 votes
10 answers
12k views

Why do Jewish women wear so much black?

Usually, the color white is associated with purity (as indicated by the kittle). I don't know if the opposite color in the spectrum represents the opposite of purity (yes, I know it's not technically ...
0 votes
2 answers
132 views

What is the connection between Lavan and Lavan?

We all know Lavan was a bad person. He tried to kill Yaakov, he enslaved Yaakov, tried to cheat Yaakov out of his wages, he gave Yaakov the wrong wife, and many more. We even begin the hagaddah with a ...
1 vote
1 answer
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What is the underlying requirement of Techeilet?

I have been reading the various questions and answers about techeilet but I still don't understand the exact demand (and apologies if I missed this amongst the other questions). Is the goal to have a ...
5 votes
2 answers
603 views

Pampers tzovehah (dyeing) on shabbas

Pampers make diapers which have a wetness indicator. Initially it is a yellow stripe when dry; when wet it turns blue. I am wondering whether this would be considered tzoveha. http://g-ecx.images-...
7 votes
1 answer
5k views

History of Chabad Moshiach flag

I'm working up a presentation on flags in our history, and I need information on the unofficial but commonly displayed Chabad Moshiach flag. Does anyone know when and where it was first flown, and ...
10 votes
7 answers
11k views

Is there a problem with women wearing red clothing?

I've heard that red clothing is forbidden for women to wear because it's immodest. Some recent psych research confirmed that men are more attracted to women in red. So that means it's prohibited, ...
6 votes
2 answers
1k views

What exactly does the 'blue rainbow' refer to?

Inspired by an answer this question: However, Rav Yonason Eibshitz in his sefer Yaaros Dvash (chelek 1:drush 12) explains in the name of the Zohar Hakadosh that there are two types of rainbows. ...
0 votes
4 answers
6k views

What actually happened to Jacob's and Laban's sheeps and goats?

Genesis 30 (JPS): 34 And Laban said: 'Behold, would it might be according to thy word.' 35 And he removed that day the he-goats that were streaked and spotted, and all the she-goats that were ...
3 votes
1 answer
126 views

Source for Red Apples?

Rav Yisroel Reisman (Ki Savo 5775) mentions an interesting concept for dipping apples in honey, The Mechabeir says that a sweet apple is typically red. I have seen those who wonder of why we use ...
4 votes
0 answers
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Colors of the Parah Adumah

Consider the following opinions of what adumah can or does in fact mean. Sadia gaon writes that Aduma of the Parah Adumah is 'Tzafra'. The footnote from Rav Kapach in the Mosad Rav Cook edition ...
10 votes
3 answers
688 views

Tzoveah on Shabbos

It is going to sound strange but here is the question In the toilet there are these blue things that clean your bathroom with every flush by adding bleach hence it colors the water blue every time you ...
9 votes
4 answers
5k views

What does the blue color mean in Judaism?

I noticed that the fringes (tzitzit) are blue, the blue stripes and star of David in the Israeli flag. And also Rabbi Gutman said in a youtube video that the color blue must not be seen while ...
5 votes
3 answers
256 views

Why did Eisav say "red" twice?

Genesis 25:30 says: ... הַלְעִיטֵנִי נָא מִן הָאָדֹם הָאָדֹם הַזֶּה ... ... "Pour into [me] some of this red, red [pottage] ..." Why did Eisav feel the need to say "red" twice?
9 votes
2 answers
274 views

Why do a sefer Torah's letters have to be black?

My son asked why the letters have to be black, considering there are lots of other colors out there.
3 votes
2 answers
329 views

Changing the High Holiday shul "look"

Most shuls that I have attended change the parochet (ark "curtain"), shulchan (Torah reading table) and amud (chazzan's table) coverings and Torah coverings to white in honor of Rosh Hashanna and Yom ...
6 votes
2 answers
210 views

Illustrated Tzara'at

I have indirectly heard of someone in a school (I think it's a yeshiva student) who is doing a research project on various medical conditions. She decided to discuss tzara'at and compare what the ...
2 votes
1 answer
201 views

Minhag to leave an area of the wall unpainted: does it need to be unpainted, or can it be painted another color?

I found this: http://www.jewishtreats.org/2014/07/a-house-unfinished.html it says "there are some minority opinions that permit one to mark the zeicher l’churban by painting an appropriate size square ...
14 votes
5 answers
1k views

Do Tefilin need to be painted with "special" ink?

When painting tefillin, are there any requirements regarding the ink (other than the need to be black)? Or is any ink okay to use? Like in the comments to this answer, shoe polish is recommended. Is ...
2 votes
1 answer
185 views

Why say the rams are reddened?

Among the materials used for the mishkan were "reddened rams' hides" (T'ruma 25:5). There are two ways one can read that phrase: it can mean "reddened hides of rams", that the hides were reddened, or "...
2 votes
0 answers
159 views

Discolored Tzitzis

The Rambam says that the tzitzis strings must be the same color as the garment they're attached to (with exception to the techeiles string which is always blue). (Source?) All of the tallisos these ...
0 votes
1 answer
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Rambam on color certainty of tekheleth

According to a questioner on this page, the Rambam in the Pirush HaMishna contradicts the Rambam in Hilchoth Tzitzith regarding whether we can dye tekheleth due to uncertainty about the color. Where ...
5 votes
1 answer
194 views

Cesem found on someone with dark skin

A cesem that is found on a colored piece of clothing is tahar. What about someone with dark skin (they are of some ethnicity/race that has darker skin), could the same idea be applied in such a case ...
10 votes
5 answers
11k views

What was red in the stew that Jacob made for Esau?

Genesis 25:29–30 (JPS): And Jacob sod pottage; and Esau came in from the field, and he was faint. And Esau said to Jacob: 'Let me swallow, I pray thee, some of this red, red pottage; for I am ...
2 votes
1 answer
197 views

Colourful Tallitot

Is there a preference, if one is davening at a schul where everyone wears the same tallitot (black or white), to borrow a tallit, assuming it is of a kosher size, rather than wearing one's own if it ...
2 votes
1 answer
126 views

Real green hair?

I've seen people with their hair dyed green, but I was under the impression that nobody has naturally green hair. But Rashi says (Tazria 13:37) שער שחר - מנין אף הירוק והאדום שאינו צהוב? תלמוד ...
2 votes
1 answer
138 views

Does adding a bit of red wine to white wine change the resulting drinks' status vis-a-vis kiddush?

There are various opinions regarding the acceptance of white wine for kiddush. My question is, if say one has a full bottle of white, if they pour a cup that is majority white (80%+), but are able to ...