i want to change the colour of my dash board from the boring colour grey to blue or somthing like that.... How would i go round doing that.... i mean do i just buy a blue spray and start spraying?? lol
No. You can't just spray the topcoat on - it'll flake off in no time
If you want a smooth finish, you would be best off buying plastic filler primer, spraying the dash with this, flat in back smooth and then spray on the topcoat and lacquer. You may get glare though. If you don't mind having the patterned finish of the dash, then you can use normal plastic primer instead.