primar

[TanKaBoY]

can u put a light coat of a gray primar then start spraying the paint on(ps. the colour is white)

[tonioseven]

White primer is usually preferable with white paint. Try it on a scrap piece of plastic first though.

[TanKaBoY]

ok, thank you.
would if matter if its an old kit with paint on it?
would that effect it in anyway?

[Vric]

White paint will always look a bit gray with gray primer