The following details come from John Heydon's Theomagica: A Temple of Wisdom, Mr Farrell recently edited and published. I find them interesting to experiment with in magical workings involving geomantic figures, especially talismans, as well as in mystical ones, i.e. pathworking into their realm.
Puer: white mixed with red; Amissio and Caput Draconis: white mixed with citrine; Albus: lovely white mixed with red; Populus and Via: green, or russet black; Fortuna Major: green, yellow or gold; Conjunctio: purple or grayish white, sometimes black speckled with blue, green, white, or a dark crimson or whitish tawny; Rubeus: red mixed with brown; Aquisitio: red, yellow, or green and sanguine; Carcer: white, russet, or dun color; Tristitia: tawny, sky-colored with blue; Laetitia: a green, whitish, glistening color.
Puella, Fortuna Minor and Cauda Draconis remain unaddressed by the original author for some reaon. Even so, many of the color correspondences seem completely odd, such as in the case of Carcer or Tristitia, given their nature and planetary attribution. I have no idea where Heydon got them or even if he paid any attention to them. Mr Nixter adds his own remarks to this: