On systems that do not support the Palette Manager, Windows can only display 16 standard colors. However, if you request another color, Windows tries to create that color by dithering; that is, by filling a space with dots of different hues. This might work well, for example, in a frame background. However, if a field-level widget, such as a fill-in or radio set, inherits a dithered color, only one hue is used. The result might be undesirable. Therefore, avoid using dithered colors for field-level widgets.