I changed mine from cream to black. The two small screws that are not pickup screws hold them on. If you look at the pickups you will see what I am talking about. I ordered the black one's from EB. They were cheap.
Same here - I have a Black Cherryburst Axis that came with cream PUP covers, knobs, switch end and tip on the trem arm. Basically I thought it looked dumb on a guitar that already had black accents.
When I spoke to EB customer support, they were unable to say whether their PUP covers were standard or not (!), so I just wound up ordering black pickup covers from them, and the rest from Allparts. It was cheap, and easy to do.
The plastic picup covers are just held on with 2 screws. Easy to change with the strings off.