Hi mate plenty of nice factory colours have a look in my O/H shed and see if you find anything you like
Holden HQ-Z Paint Colours and Codes
Whats the original colour?
My current faves are Cyan, Amethyst, Lime Green, March the 17th, Blackwatch Green and Aztec Silver
If you are anything like me as soon as you paint it you'll see a car with a great colour and want to change it.
Good Luck
Leroy