Amazon.com: ScratchesHappen Exact-Match Touch Up Paint Kit Compatible with Fiat Chiaro Silver Metallic (807/B/PSP/SSP) - Bottle, Preferred : Video Games
How to Draw a Sony PSP device in MS Paint « Software Tips :: WonderHowTo
Fast Pressure Sensitive Paints – ISSI
Painted PSP 1000 clear shell. I used green spray paint and did a light even coat to give it a transparent look. Link in comments for the paint i used. : r/PspModding