Things you will need:
1 can of spray paint (I chose a metallic gold)
1 can of plastic primer
A rotary tool (helpful but not really needed)
A few sheets of sandpaper (320 grit or higher)
1 can of high-luster lacquer
Step 1: Disassembling your N64
It is pretty simple. All you have to do is find a hard plastic pen (mine was a Pilot brand), unscrew the back, melt it a bit with a lighter, and jam it into the screw hole. After you have let the pen cool off for a little bit, it should now be nice a mold of the security screw, and you should be able to remove those annoying little screws without much problem.
You are going to need to do this several times because the plastic screwdriver you just made strips very easily. Also, you might find it helpful to have a piece of tin foil to roll your melted screwdriver on should it mushroom out too wide to fit in the screw holes.
Step 2: The Innards
Once you have detached all of the innards, set them someplace safe for later.
Step 3: Modifying the Cartridge Tray
I must admit, I don't own any Japanese games for the N64, but I like to keep my options open.
Removing the protrusions can be done with either a rotary tool or a razor blade. There is no need to fret about how pretty it looks because after this project is over nobody will ever look at the bottom of the cartridge tray again.
Step 4: Popping off the logo and prepping the case for painting.
Also now would be a good time to remove the power and reset buttons. They are held in with two tabs, and are really easy to pop out.
Step 5: Sanding
Step 6: Priming and Painting
1 coat of primer
2-3 coats of paint, about an hour apart
4 coats of lacquer.
It is easy to get carried away and lose your patience, but trust me, let everything dry before going to the next step or handling anything that has been painted.
Step 7: Done!
If you have the gold copy of Ocarina of Time, now would be the perfect time to play it.
I plan on painting the ugly grey controller when I get around to it. I've got to use the last of my gold paint somehow.