I use an acrylic paint called craft smart, Michaels carry it, I powder paint my jigs then put the eyes on then cure at 350 degrees for 25 min,the acrylic melts into the powder paint.
There are 2-3 different Craft smart paints,the one I use says multi surface premium satin acrylic paint.In the directions on the back it says heat to 350 F for 30 min.
I have posted the time and temp charts and talked to CSI many time over the years. I bake all colors except for White Pearl and that one is different, but all other are 15 min @ 392-400 degrees. Now that 15 min is lead temp for that long so in my little toaster oven (which I have checked to see what I need set it to get my temps) for 17 min to give it time to get up to temp and then to head lead fully. Any longer using Flame Red and you risk changing it to a color not so good. Also the clear over coats like Sally's is fine on most colors, but not on FL Yellow or Chartreuse (FL Green) as it will change them to an ugly color! For them you probably should use the clear vinyl which take a while to cure, but worth it for the end product IMHO! Oh and I failed to mention Silver or Chrome and I don't know what you would over coat them and they still look good as I have not really tried to see.
Skip