It depends on what look you want. Dark make up excentuates the eyes more, makes you look older ( I think) and more sexy. I wear darker makeup for a night look. With a light look it makes you look more cute than say darker smoldering eyes. It all depends on what you want. :)
I would do mascara with a little eyeliner (So it balances out your coloring and defines your eyes), but play with shadows. Sometimes go soft with whites and light browns/blues, and others smoke it up with shimmery blacks and blues.
Remember a little can go a long way, and only a little more than that can make you look like a clown whore! Lol.