Sub-themes are pre-defined CSS classes that can be applied to a control using Javascript. This is in addition to the main style that is defined for a component. Most of the controls in Alpha Anywhere that are written in Javascript contain a sub-theme property.

For information on designing custom sub-themes see the Local sub-theme definitions - Javascript and the Local sub-theme definitions - CSS pages.

Sub-theme picker preview

When you pick the sub-theme for any control that supports sub-themes, the picker shows a preview of all of the available sub-themes.