With the options button you can set the number of colors from 1 to 8, create a new palette, open a stored one, save the active palette, save a copy with other name, delete or show the palette on a panel with all the color codes to be able to use in other applications.
Touch one of the bars to select the color you want to edit and modify this color by moving right or left the R, G or B slider buttons to control the red, green and blue levels.
Touch the HSV button to control the Hue, Saturation and Value of the selected color bar.
With the AUTO button you can activate an automated way to get harmonic colors based on one of the four rules available with the 4 rule buttons.
COMPLEMENT is the rule to get a group of colors equidistant in the chromatic circle.
With SIMILAR COLORS buttons you get a sequence of colors with a small difference of hue between them. You can control the level of difference with the D slide bar.
By pressing the button TWO GROUPS you will get a sequence of colors with small difference of hue level and a second sequence with the complements of first group.
The button ONE AND GROUP keeps the color of the first bar and change the rest of bars to the complement of first one with a controllable difference between them.

Colors is a free and without adds application.