The colors menu only has one command in it, Edit Colors.

The interface for this command is a bit complicated compared to what we’ve looked at thus far.

This is the basic Edit Colors window. This will open up on top of the regular Paint window when you select Edit Colors from the Colors Menu.

From here, you can customize your color palette. The Color Palette is the portion of the Paint window from which you can select which color you want to use to paint or draw with. Since there are only a relatively small number of colors available through the basic Color Palette, you’ll probably want to pick custom colors at some point if you’re doing a lot of actual drawing with the drawing Tools.

To do this, click on "Define Custom Colors". This button will cause the Edit Colors window to expand, and you’ll be able to select new colors from the Color Picker.

As you can see here, the color picker allows you to pick from a wide variety of shades in the RGB color gamut. RGB color is the color scheme used by mixing the primary colors of light, Red, Green, and Blue, and is the basis for all color computer graphics.

To pick a color, you can just click on the region where your desired color appears. You can adjust the lightness or darkness of the shade by clicking on the shading bar at right. If you know about color theory, you could enter numbers into the Hue, Saturation, and Luminosity or Red, Green, and Blue boxes. If you don’t understand it, it’s probably just easier to work with the gamut box.

The color you’ve currently picked will show up in the box beneath the gamut box. If you like this color, you can add it to your color palette by clicking on the Add to Custom Colors button. The new color will then appear in the Custom Colors palette.

When you are all done, click on OK to resume working in Paint. If you make a mistake and don’t want your changes to be saved, click on Cancel.

Tip:  To work with an existing color in the color picker, click on its swatch in the Color Palette. The position of the selected color will automatically change to the color that you clicked on. You can then make a more gradual adjustment of the color.

Online reader, Matti Nikki, submits this tip regarding "edit colors." "...it's sometimes useful to redefine the colors in the quick palette. You can do this by double
clicking any color in the palette and then the edit colors window will pop up. Selecting a new color and clicking 'OK' will then replace the entry in the quick palette which is a good idea if you need to use that color often."