I think having read hair is an advantage since hair piece hair tends to turn red anyway lol. Just sending in a hair sample will be fine, they will match it no problem

as far as attaching.. You can use tape, glue, whatever you want. Well let me correct that, what kind of base did you get? I am guessing you probably got lace. You will have to experiment a little and find what adhesives work best for you personally.. Some prefer tape others prefer glue or a combo of both. Hell i don't even use either half the times I use a product called got2b glued. lol.