Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
@charset    : UTF-8
@lang       : en
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@help       : %About
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                                   Colors


An application's proper use of color can greatly enhance its
effectiveness. Likewise, improper use of color can thoroughly confuse
a user. Below are some basic rules about the use of color:

   ∙ Never alter the first 16 colors in modes with 256 colors or more.
     Only change system colors in other cases when absolutely necessary.
     These are system colors which should be controlled exclusively by the
     user.

   ∙ When providing a custom 3D effect to complement the OS under TOS 4.0
     and above, use objc_sysvar() to interrogate color settings to allow
     your objects to match.

   ∙ Make dialogs FL3DBAK objects to allow the user's selected dialog
     color to come through.

   ∙ Don't use colors to decorate, use them to emphasize or draw
     attention to an important screen element. Use colors to display
     choices relating to color or when a user expects it in the document.

   ∙ When using color as a choice indicator, use green as a positive, red
     as a negative.