Additional colors and shades

[Gedalyah-Reback-Tab9]

Please add more colors, as many as possible, for text and for text highlighting. At a minimum, I hope you can add the following:

Light and dark shades for:
Gray (plus a regular/medium tone)
Purple
Blue
Red
Yellow
Green
Orange
Brown
Pink/Magenta

Plus, please add specific options for black and white (so that 1) black highlighting can be used on light versions of websites and 2) white highlighting can be used on dark versions of websites).