Colors 2
The 'Colors 2' page in the Tools tab-pages contains the following commands:
1/ Invert all Colors between Row aa and Row bb.
This command inverts existing colors in the selected rows. It does this using the simple formula:
255 - Existing_Color_R
for each color value: R, G, and B.
2/ Compliment all Colors between Row aa and Row bb.
This command compliments existing colors in the selected rows. It does this by converting the color to HSB, and then subtracting 128 from the Hue-value.
3/ Convert all Colors to Gray Scale between Row aa and Row bb
This command converts existing colors to Gray Scale in the selected rows.
4/ Rotate RGB Hue on Axis R to G, G to B, or B to R by xx Degrees, between Row aa and Row bb.
This command uses a matrix rotation to adjust the hue along the selected axis: Red to Green, Green to Blue, or Blue to Red. This can be a very useful method of changing the Hue for selected colors. It is recommended that you use small degree-values, less than 10 degrees, to understand how the toold operates.
5/ Adjust RGB Hue Percentage between Row aa and Row bb.
This command uses a matrix transformation to adjust the hue percentage of all colors in the selected rows. The percentage of the Red, Green, and Blue values are set using the adjacent controls. These are initially set to '100', indicating 100% of the existing values. You can alter each one in the range 0-200, and adjust that hue percentage accordingly, up to a possible maximum.