I'm gonna paint my ps2 bright yellow, inspired by this -

I'm going to paint the two main case pieces, and the expansion bay cover and leave the controller ports, memcards, drive door, and the fan/power/AV board black.So, do you think I should keep the blue PS2 characters or just paint over them? What spray paint paint do you recommend? (I only want to use one coat)
Should I sand beforehand?