This is a patch I have hacked on in my spare time. It replaces the old color picker with a new one. See here for a video demo http://youtu.be/rPu6EmIxkIM?hd=1 To see it in the running office you can for example go to menu tools->options->colors and press edit The dialog is implemented as a service so it is usable from extensions. here is the patch http://dl.dropbox.com/u/10629960/patch.txt The patch is against an OOo DEV300 m102, so there may be conflicts. There is one binary included in the patch, which looks like a git patch can handle. If not, here is the image http://dl.dropbox.com/u/10629960/colorslider.png It should be placed in default_images/res My changes and new code are MPL 1.1 / GPLv3+ / LGPLv3+ licensed. To any reviewers. The code in the new dialog may look a bit complicated at places. There where two difficulties in this feature causing this. First, the rendering of the color field at the left and the color slider on the right where a huge performance problem in my first implementation. So I did some loop unrolling and lookup table stuff to make it usable. Second problem are rounding errors when converting between different color spaces. Therefore the rgb color is saved as doubles and some care has been taken that the conversion is not jittering. I'm hanging around on IRC with nick "cl" sometimes if there are merge conflicts or build trouble on a different platform then windows. Christian.