The ColorMatrix object

Sub
HueRotate(ByVal h As Single)

Sub
ColorMultiply(ByVal r As Single, ByVal g As Single, ByVal b As Single)

Sub
ColorAdd(ByVal r As Single, ByVal g As Single, ByVal b As Single)

Sub
ColorContrast(ByVal C As Single)

Sub
ValueMultiply(ByVal v As Single)

Sub
Apply()