Within the Visual Studio Designer, under the properties window you are able to select the ForeColor, BackColor etc using color picker. When you want to pick a color, a color picker comes up with the tabs 'Custom, Web, System'.
If you select custom, then you are able to add a new color to the picker, but only the bottom 2 rows are changeable, and the changes don't persist across controls. So if you add a color to the palette, when you select another control and want to change for example BackColor your previous added color is not there.
Is there a way to create and import a custom set of colors into the designer's color-picker control?
Note: This question isn't asking about VS themes, or if colors can be implemented as a class in the code-behind. I'm after a way to tailor the designer.