I’ve recently painted the NEX flash to be black to match my body better. Here are steps to disassemble the flash and some pictures.
Remove the side tabs by prying them, they are held by double sided tape

Remove the 4 black screws, 2 at each side

Remove the small piece of metal and put it aside, this metal is so small. I dropped it and it took me half an hour to find it in my crowded room

Disassemble by pulling the top cover off

A stage to hold the side covers

Paint used is Krylon Fusion for plastic – satin black

Final result, the Sony Nex-5N with Vivitar Series 1 90mm f2.5 (Bokina)













