It depends how much you want to spend, what style you like, and a whole lot of other things. Offset should be around +48 if i remember? There is a sticky around here, look for it. It helped me with all my questions.
I am wanting an 18" Black or gunmetal wheel. I would like one with a colorred lip on it to add some contrast. Ive seen a few with red lips and i really like them but i wouldnt mind to have a different color just to be different. Im trying to stay as easy as i can be on the wallet, but i know its not gonna be too cheap. I want quality but not the top of the line. As for width and offset im not sure.
Stick with no bigger than an 8 inch width (mine are 17x 8 Rota Boost, flush with my fender well). Offset should be in the neighborhood of +48, +/- 5 is alrite. If you want, when you find a rim you like you could paint the lip yourself, or change the color of one that had a red lip. Rims are a personal preference so I cant really add too much more advice, good luck with the search.