Color | Solid
Displays the 24 colors in the Microsoft Office Visio color palette. If your display driver supports only 16 colors, you will see dithered color. If it supports 256 colors or more, you may not see any dithered colors. The left side of each color bar shows the color when dithered; the right side shows the closest solid color.
Copy colors from
Displays a list of open drawing files and predefined color palettes. By selecting from the list, you can copy a new color palette to the active drawing file.
Edit
Select a color in the Color Palette dialog box, and then click Edit to open the Colors dialog box to edit the color.
