If you want to change the style of the tabs or the accordion panels, you simply select one of the bundled themes that you find in the Tag Groups settings, Front End, Themes and Appearance. More information about creating you own theme is available here.
Tag Groups comes with a few standard themes that you can use to give some shape and color to your tags. You apply a theme by using its class name for the enclosing element – “div class” or “table class”.
The color is applied to the “prepend” and “append” elements.
tag-groups-theme-green tag-groups-theme-blue tag-groups-theme-red tag-groups-theme-orange tag-groups-theme-black tag-groups-theme-darkred tag-groups-theme-midnightblue tag-groups-theme-slategray
This is an example:
Since the tag size is fixed, the maximum font size should not exceed 18px. The cloud looks best if all tag labels have the same height.1