No. Last time I checked the color of your shirt does not determine who you have sex with.
I think it's hilarious some people are so hung up on a color. I can understand a 4th grader thinking it's girly, but any older than that and you just sound immature. Light pink, hot pink, whatever, can all look good on guys. I went to high school and go to college with tons of guys who wore pink. Surfers who wearing bright pink Billabong t-shirts, preppy guys who wear pink polos and guys who wear pink dress shirts. Hell, I know guys who own pink (well, salmon) pants. Which looks stupid but so do the guys who wear bright blue pants. The most masculine guys I know, wear pink and have no problem doing so.
There's also nothing gay about a guy liking the color pink. It's a COLOR. Are girls lesbians for liking blue? Didn't think so.