repainting plastic terminal parts

I recently got an old Adds Regent 30 terminal (it says "Honeywell" on the front, must have been rebadged). I have repaired the electronics (I took pictures and documented the process, I'll put it on my website when it's ready), and the terminal works now. It was extremely filthy, however, and I cleaned up the outer shell with a little windex with no problems, but the brown plastic around the monitor and the keyboard was very sticky. I tried cleaning the plastic around the keyboard with just plain water, and with Windex, but it was still very sticky. I tested some Goo Gone on the back of the part, and it didn't damage anything, so I used it on the front. It appears that the paint is coming off. The Goo Gone made it come off a little, and I noticed that on the rest of it, just rubbing it with my finger could cause the paint to come off. It appears that whatever grime got onto the terminal ate away at the paint, as the paint on the inside does not have this problem. Here's my question - what is the best way to go about painting things like this? It was originally a dull finish (I think), do they make spray paint that has similar properties? Does it come in "Honeywell Brown"? Has anyone had experience painting plastics, or repainted any computer cases before? Any help would be appreciated. Ian Primus ian_primus(a)yahoo.com