It's not your original Q, but I've used epoxy (varying set times and I prefer the 5 minute), I've used CA (thin, medium and the "special" formulation sold by PSI), I've used expanding polyurethane glues (aka Gorilla glue) and I prefer the 5 minute, 2 part epoxy. I find the epoxy a little too short on set time, but the end result has (IMHO) the longest lasting structure. It retains a wee bit of flexibility and does NOT get brittle over time (the polyurethane glue does - again IMHO).
To your original Q - when I paint, I usually use a "hobby store" set of acrylics. I've had excellent results. I paint both the blank AND the tube (belt & suspenders mindset). I've found that without a fan the blank doesn't get much air circulation and it requires a lot more dry time than the tube. When I need white or black, I spray. I have a tapered dowel that is my tube holder. When I do the blank I put on some nitrile gloves and hold it.
One other thing - when you paint both the tube AND the blank, you occasionally tend to make the fit too tight. So I test the fit before I paint and, if necessary, I "ream" the blank a bit with 220 wrapped around a dowel or whatever.
Hope this answers your Q