I am a Yekke and am unsure about some of the customs such as a good Siddur to use (My Rabbi is Chassidish so I use Nusach Sfard) and also a Tallit Gadol. I'd prefer to use the Tallit that is all white. Is there a mesorah in this?
I'm a Jekke, so I think I can answer this from communal experience. Most Jekkes now use black-striped tallisaus during the year (only married men wear white stripes, and only then during Yomim Noroim). Historically, light blue stripes were common, as can be seen in Moritz Oppenheim's paintings, although this is no longer the case, as above. I personally wear a Belzer-style tallis with midnight blue stripes, altho
The best siddur for Jekkes to use these days is R' Rallis Wiesenthal's Tefiloh Sefas Yisroel, which is edited following Rishonic and early Acharonic German siddurim. Nusach Sfard is not appropriate, as it doesn't adhere to our Rishonim.
A final note, our poskim are incredibly strict in opposing the usage of "oy" for the חוֹלם vowel. There's an article in the siddur I linked which discusses this.