I've done that before when I wanted brown joints on a SlipStream...but either the joints or arm pegs are permanently damaged...this can create slop I'm not particularly fond of...
Regardless, a fully painted figure does not fit in well with a factory collection...
Yeah, I feel the same way. It's not just the pegs. It's the areas around the elbow joint and shoulders, mostly. And knee joints.
I generally paint entire legs, heads, webgear, and even the "pants" part of the torsos. But I won't paint full torsos or arms unless I have to because it's a cast kit.