I know little of Dupont nowadays but Austin was right.Radiance is more of a dye than a paint.I just played with some in intercoat clear and it doesn't seem to have any more depth than using toners in it.It does look nice but I think you'll have to use topcoat clear to get real depth.I'd make it on the strong side so 2 or 3 coats will do what you want.If you do use it in DBC500 it's best to use the hardner if you'll run over 4 coats of base without clearing.I haven't many times but there could be problems.
