GimpColorArea
@gimpcolorarea: the object which received the signal.
@GIMP_COLOR_AREA_FLAT:
@GIMP_COLOR_AREA_SMALL_CHECKS:
@GIMP_COLOR_AREA_LARGE_CHECKS:
@color:
@type:
@drag_mask:
@Returns:
@area:
@color:
@area:
@color:
@area:
@Returns:
@area:
@type:
@area:
@draw_border: