Choose background : Grey/Blue stripe Grey checkboard Grey Diagonal rainbow headache Strange pattern RGB gradient crossing

Exemple 1 Use of polar coordinates in HSV color space	Exemple 2 Hue/Saturation square	Exemple 3 Hue/Value square	Exemple 4 Saturation/Value square
Exemple 5 Radial Saturation and Value	Exemple 6 Happend to be nice looking trigonometric parameter tweaking	Exemple 7 Saturtion tweaking based on example 6	Exemple 8 Saturation tweaking based on example 1
Exemple 9 Red and Blue channels obtained by trigonometric tweaking, Green channel choosen to fill the lower left black area	Exemple 10	Exemple 11 Example 10 with full transparency when out of rainbow	Example 12 example of cyclic function for generating an image usable as tiledbackground
Example 13 Color weel (top of the HSV cylinder) Same as Example 1 with Full transparency when RADIUS > 1	Example 14 Thumbnail of Paul Schmidt famous 16 million colors 58,4KB png	Example 15 Another cyclic function example	Example 16 Radial R,G and B with different centers
Example 17 Classic X&Y Sirpinski of demos of the old times, with Hue coloring.	Example 18 Example 13 with radial transparency gradient.	Example 19 Example 16 with alpha=1-(R+G+B)	Example 20 RGB gradient crossing