Indication of which Placemark Group is visible

When having a lot of placemarks groups showing on the same map ("Manage Placemarks" and "Synchronize with placemark list" are both active) it would be really nice to have som sort of indication of whether a group is active (visible) or not.

Othervise thanks for a great compnent

Hi.
Use styles.
Go to map details.
Open tab Groups
Field "Group CSS"

There are 2 predefined styles
- simple
- advanced

Set Advanced and you'll see difference

You can also set External, and in your template add styles for that case.
In style classes will be "-external" suffix.
You can copy styles (with rename it to -external) as you need from my CSS file into your template and change what you need in case "External" style

Just set different values and check how I switch class names depend on two fields "Group CSS" and "Group Control"