I have a blue one.. it actually doesn't look that good close up.. looks like someone spray painted it blue (it's not anodized).. but from far it looks nice. You can use your old bolt as long as it's from a rear cocking spyder (or clone).. and for the last question, yes, the trigger can use some work.. actually, the entire gun is made of pretty.. cheap.. material.. the plastic trigger is just wrong.. and the frame and grips are all plastic. Even the main body isn't too strong.. but for the price the marker rocks. Oh, and for your other post, yes it release the sear even if it's not gassed up. The only other prob you will have if you get a compact is the way they made the "unstandard" ASA holes on the bottom of the trigger, but there are other posts about how to fix that. Good luck!
My blue one doesn't look that good, but it's prob still better than the other colors.. As for the trigger.. it just hangs there.. kinda of lame.. if you buy a checkit trigger, you can adjust the play though.