“Where is the color of clothes written in the Torah?”
‘ksones bad kodesh yilbash” Vayikra 16:4, referred to in Talmud as ‘bigdei lavan’
Misna Negaim:11:3 “skins and clothes of colors are not subject to tuma of ngaim”
Orach Hayyim tav kuf nun tes/het: Mechaber and Mahril sham. Summarized: for a bris mila on TB the mohel the sandak and the father can wear shabbos clothes, JUST NOT THE WHITE ONES.
And to tamazball, I am a big tough looking guy, and I look great and feel pretty in a quiet pink shirt. Some folks should come to EY and enjoy the sartorial variety among the non black/white wearers.