Choosing the right color for your Web document is always a tricky task. Different browsers may support different color palettes, various video cards support variable color depths, and different platforms may display the same colors differently. Internet Explorer 4.0 offers two ways to refer to its supported colors: name or RGB number. For example, the color aquamarine can be specified using the aquamarine name directly or by using the RGB value #7FFFD4. The RGB value is in hexadecimal, where the red, green, and blue values range from 00 to FF.
      Unlike most Windows-based applications, Web pages impose their colors on the user. Internet Explorer 4.0 provides a way for Web developers to make their pages utilize the user-defined system colors. User-defined colors are colors the users set for themselves using the Appearance tab of the Display Control Panel. That means the Web page changes color when the user changes settings. Here is a list of all the user-defined system colors you can use on your Web pages. Their names are self-explanatory.

ACTIVEBORDER

ACTIVECAPTION

APPWORKSPACE

BACKGROUND

BUTTONFACE

BUTTONHIGHLIGHT

BUTTONSHADOW

BUTTONTEXT

CAPTIONTEXT

GRAYTEXT

HIGHLIGHT

HIGHLIGHTTEXT

INACTIVEBORDER

INACTIVECAPTION

INACTIVECAPTIONTEXT

INFOBACKGROUND

INFOTEXT

MENU

MENUTEXT

SCROLLBAR

THREEDDARKSHADOW

THREEDFACE

THREEDHIGHLIGHT

THREEDLIGHTSHADOW

THREEDSHADOW

WINDOW

WINDOWFRAME

WINDOWTEXT