Green tops always do it for me. Like ones that almost match my eye color. Seriously, the only time I get strangers telling me I have pretty eyes is when I'm wearing green. I think they look pretty cool when I wear white too, but it doesn't seem to get the same reaction.
If by "thick" you mean curvy then wear clothes that are kinda tight but don't show too much skin. Keep it looking casual though. You have to LOOK like you're comfortable in what you're wearing and not just dressing that way for the sake of impressing others seeing you, whether guys or girls.
As far as bringing out your guys guy, sorry, I'm lost on that one =(