Is there a way to make the active selection more noticeable? I'd like to make the active selection color different because I can barely see it when I'm selecting faces. I have an object that I'm trying to UV map, and there are some tiny faces that haven't unwrapped the way I expected, which I can see in the UV map editor, but can't find in 3D view because the active selection is too hard to see.
Switch you view to user preferences. Select 3D View from the left.  You will find what you need
Consider Zooming.  Number Pad (.) period then you can zoom at center.
User preferences allows you increase the size of the outline and vertex dots