A5s are IMO, rock solid and dependable. Knowing it isn't worth much, just keep it for backup to whatever it is you eventually buy. Besides, it's not like you can't play with an A5. I play almost entirely on blowback Tippmanns. It hurts many feelings to get beaten by a fat guy with a mech Tippy, which is probably why I like playing with them so much.
If I were to re-paint an A5, I'd probably go with OD green or just strip it bare and leave it be. I had a bare M98 that was very cool, but I sold it.