MX

Technically the process is subtractive in RGB color space.
Bleach
Bleach has no clear analogy in the physical world. It is useful for highlights when the light source is not
white. The color of the object with Bleach applied:

Gray & White - lightens the colors in underlying objects.

Black - no effect on the colors of underlying objects.

Other colors - lighten underlying colors towards unsaturated color. (Light-red over light-red gives
a pale-red: green over red gives yellow.) If you want to use a colored object to lighten but not
color-shift underlying colors, you may find Lighten transparency type easier to use.
Technically the process is additive in RGB color space.
Contrast
Usually you would use C on a separate object to modify the color of underlaying objects (that is, you
would use an object as a filter). Depending on the color chosen, it increases the contrast of underlying
colors (make them brighter or duller).The color of the object with Contrast applied:

Gray (below a 50% tint of black) & White - increase contrast (compress the color range) to
make the underlying colors brighter.

Gray (above a 50% tint of black) & Black - make underlying colors duller (towards gray).

Other colors - convert the color to the equivalent shade of gray. (Yellow gives light gray, Red
dark gray.) Then increase or decrease the contrast of underlying objects.
Saturation
Usually you would use Saturation on a separate object to modify the color of underlaying objects (that
is, you would use an object as a filter). Depending on the color chosen, it makes the colors of underlying
objects brighter or duller. The color of the object with Saturation applied:

Gray (below a 50% tint of black) & White - increases saturation in the colors of underlying
objects towards pure color.

Gray (above a 50% tint of black) & Black - reduces saturation (colorization) towards black.

Other colors - convert the color to the equivalent shade of gray. (Yellow gives light gray, Red
dark gray.) Then increase or decrease the color saturation of underlying objects.
Darken/Lighten
Darken/Lighten is useful for making underlying objects darker or lighter. Usually you would use it on a
separate object to modify the color of underlaying objects (that is, you would use an object as a filter).
Darken/Lighten are grayscale versions of Stained Glass/Bleach transparency types. The color of the
object with Darken/Lighten applied:

White - no effect on the colors of underlying objects.

Gray & Black - darkens/lightens the colors of underlying objects.

Other colors - convert the color to the equivalent shade of gray. (Yellow gives light gray, Red
dark gray.) Then darken/lighten the colors of underlying objects.
Brightness
Depending on the color chosen, Brightness makes the colors of underlying objects lighter or darker. The
color of the object with Brightness applied:

Gray (below a 50% tint of black) & White - makes the colors of underlying objects lighter.
White has maximum effect

Gray (above a 50% tint of black) & Black - makes the colors of underlying objects darker.
Black has maximum effect.

Other colors - convert the color to the equivalent shade of gray. (Yellow gives light gray, Red
dark gray.) Then lighten or darken the colors of underlying objects.
Luminosity
Luminosity uses the grayscale equivalent of the color to control the luminosity (or Value) of underlying
objects. Note that Luminosity has no effect on gray, white or black underlying objects. The color of the
object with Luminosity applied:
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