It's an 'off white' colored gimmick. Yes, it looks like an unwrapped piece of Wrigley's gum.
No, don't spray paint it...lol.
Now, I had extra gimmicks, so I used a food coloring/Kool Aid mixture to get a 'reddish' stain because I wanted to have a gimmick that mimicked the "Big Red" gum.
It works well too.