tC rims paintable? Options

[SwissFerdi]

Looking for new rims, and from what I've seen here in the FS/WTB section, tC rims and 7th gen rims aren't that expensive and a sure fit on our Celicas. I know that stock 6GC 5 spokes can be painted, but since tC and 7GC rims are powdercoated, I'm assuming the process of repainting is different. Would it be possible to sand and repaint (rattle can, most likely) them by hand? I'm asking because I would most likely want to have them black anyway, so being able to repaint them gives me the freedom to go for a less cherry set.

Thanks guys.