I agree with Miss Jenn. I think a dark shirt this year is a nice compromise. I have quite a few white t-shirts I hate to throw away but will probably never wear again. I hate wearing something that looks like a white undershirt out in public. The dark green color works nicely here in Seattle.
However, I've also lived in Florida and Mississippi and I know what a dark shirt does in the hot sun. I guess alternating light and dark designs each year works OK for me.
Silver