Question
When making a Tallit, aside from not mixing linen and wool, must there be distinctive color fabric in the four corners? An Atarah (a sewn collar, often decorative)?
Answer
I am not aware of a color requirement for the corners. There is no requirement for a fancy Atarah that some have, but there should be some mark as to where the top of the Tallit is so that the same end is used on the head each day.