MacDraw Pro: Some Colors Appear As Dithered Patterns

This information was provided by Claris Corporation on 16 March 1998, and incorporated into Apple Computer's Tech Info Library.
Some colors appear as dithered patterns, instead of solid colors. This effects screen display only, it has no effect on printing.

To change the dithered colors to solid colors:
1. Select the color(s) in the Color Palette, then Choose Solid from the palette's Special menu.
2. Place preferred colors in the Style Bar.
3. Increase the number of colors in the Monitors Control Panel.
4. Eliminate unused colors from the active Color Palette, thus decreasing the total number of allocated colors.

If the total allocated colors exceeds the colors that can be displayed on screen, MacDraw Pro will dither some of the colors. (Total allocated colors includes all the colors in the current palette, plus all the colors in the Style Bar, plus a few reserved colors). This dithering allows you to create documents with thousands of colors even though your monitor may be able to display only 256 colors. The additional colors beyond 256 will be displayed as a dithered pattern, closely simulating the true solid color that it represents. If you want to change a dithered color back to a solid color, select the dithered color in the Color Palette, then select the Solid command from the Special menu. MacDraw Pro will revert the dithered pattern back to the solid color. However, MacDraw Pro will then have to convert other colors in the palette to dithered colors to accommodate this action.


If you have certain colors that you want to always display as solid colors (such as colors used to display gradients), place those colors in the Style Bar. Colors in the Style Bar are given priority over colors in the palette for display as solid colors.

Published Date: Feb 18, 2012