Reply To: Let's Talk Tallis

Ok found two sources which say to have a stripe or some blue for a zecher see the Leket Yosher talmidim of the terumas Hadeshen :

http://www.hebrewbooks.org/pdfpager.aspx?req=49438&st=%D7%96%D7%9B%D7%A8+%D7%9C%D7%AA%D7%9B%D7%9C%D7%AA&pgnum=13

the second source is the Eshel Avraham who quotes the Elya Rabbah see 6:

http://www.hebrewbooks.org/pdfpager.aspx?sits=1&req=41248&st=%u05D6%u05DB%u05E8%20%u05DC%u05EA%u05DB%u05DC%u05EA