You do it the other way around: find a t-shirt that is a good match, and match your design to that shirt. There are many good brands with large colour ranges, so it should be possible to get a good match. You can get things dyed if it's a must, but it is an added expense and hassle best left avoided.jadedknight said:
As for shirt colours... off the top of my head I have a PMS chart for American Apparel, Alstyle and Gildan, so they're definitely around. I'm sure others are floating around somewhere.
I doubt many of us have a fifty year old mum; I'd also lay off the age jokes since one of our resident heat press experts is older than that himself and doesn't seem any the worse for wearjadedknight said: