YES! all my HPIs. I have removed al the purple from my RS4s and my Savage SS. I even replaced the purple SS shock springs with black springs from the Savage 25. I stripped the head, and all other purple aluminum. The only part I didn't strip was the purple piece on the carb, I didn't want to...
I really don't mind red, I hate purple. I have stripped purple anno off every rc that I had with purple, or dyed any purple plastic, like rpm arms. I REALLY hate purple.
Not true, I had an old clodbuster with red parts, I dyed them all black with no issues at all. You just have to leave them in longer than usual or they'll have a purple ish hue to them. But that's for plastic, you can't dye anno. I have also dyed both blue and purple rpm parts black using liquid...