Add standard colors in ColorPicker color palette

Color palette of ColorPicker control does not support standard colors like Color.RED, Color.BLUE etc.
Note : The color palette has variations of these colors, but standard version like Color.RED (255,0,0) is missing.

Whilst user can always use 'Custom Colors' to define such colors, I think, it is a much common use case and we should consider providing these colors in color palette.