You need to be careful that the primer/paint won't soften/eat into the plastic. That said, the process would not be different than painting an automotive plastic part. You need to use a primer and also an additive that allows the finish to flex and stay adhered to the plastic. Any auto body supply company can steer you in the right direction. One more word of advice is to use all the materials from one manufacturer so they're compatible.
I was a bit wary after breaking my fibula and now having a plate/4 screws in there. I skated lightly at 9 weeks after the surgery and then went back to hockey at around the 7 month point after feeling I was finally ready. First game back I got hit in the legs and down I went. Got right up and was fine... then the worries were gone.
Nice clean pair of Bauer Impact 75 Jr skates size 4D. Got them for our daughter a couple years ago and she's outgrown them. No nicks or cuts, always dried and sprayed with Febreze after use. Tendon guards in perfect shape as we taught her the proper way to take skates off. Recent 7/16" sharpening. They come with the nice pink laces shown too, lol. Looking to get $25 shipped in the US and will take Paypal.
Got a pair of V08 customs in the TBL colorway if something like that interests you other than the colors you mention... just bumped the thread in the gloves for sale section.