First off, please don't use the word "gay" to imply weird or stupid-looking clothing, I find it rather offensive. By "gay," do you mean the jeans that gay people wear, or what? If you do, I have to point out that gay people wear normal clothes like you and I.

Second, I think for jeans, you should have both light and dark washes. I like boot-cut styles myself and I find that it's a style that looks good on anyone with any type of shoes.

I don't know what you look like in person, so I can't really suggest a type of pattern for your polos; it really depends on your skin tone, body size, and personal taste. I don't wear polos because I kind of think it's out of style now, though don't let that stop you if that's what you really want; it's just my two cents.

T-shirts are universal, nice graphic designs are cool. You can get those at Bluenotes or American Eagle. I prefer longer t-shirts myself so I can layer it under hoodies and stuff, or just hide my big butt.