HTML Color Picker:
http://www.w3schools.com/tags/ref_colorpicker.asp
HTML Color Mixer:
http://www.w3schools.com/tags/ref_colormixer.asp
HTML Color Picker:
http://www.w3schools.com/tags/ref_colorpicker.asp
HTML Color Mixer:
http://www.w3schools.com/tags/ref_colormixer.asp