Set the foreground color from rgb values.
Set the foreground color from hsv values.
Set the foreground color from an hexadecimal string.
Compose a new rgb color by changing one of its component, then set the foreground color with the new rgb values.
Compose a new hsv color by changing one of its component, then set the foreground color with the new hsv values.
Evaluate an hexadecimal string and set the foreground color.