It's a colored shirt. They sell millions to guys every year. Most of us have at least one I think. I'm going with yes here.

yeah. I've seen a guy wearing a pink shirt thats says "Real Men Wear PInk"

Yeah, as long as he does't have a big, burly beard.

Solid or striped yes, floral or with bunnies maybe not.

I don't see many guys wearing pink shirts but I personally really like it when a guy wears pink in general.

yes wear whatever you want