Need some advice on how to dress for a job interview

Brown is a horrible colour to wear to an interview, it'll make you look incredibly boring and geeky. Black is okay if you're not too pale (it'll make you look to spooky and undertaker-like), so I'd suggest going with light grey, not only does it make you appear business-like and reliable (dark blue also pulls this off but I find that grey makes you look more modern). As for the rest, keep it simple, so the standard look is black shoes (if anyone where's brown shoes they need to be hired only to be fired immediately) and a tie. Ties are open for discussion, I myself prefer a blue tie because it matches the colour of my eyes, or a skinny black tie (be sure to choose the correct knot), as black is neutral, but a skinny tie will prevent you looking like a boring douche. You need to be careful with jackets with three buttons, as not everyone can pull them off. For shirts, if you are not sure what colour goes well with you, just opt for white, but also keep in mind what kind of tie you want to wear (look at the colour of the shirt).

Jam it back in, in the dark.