Very similar addon to Baud Mark except that instead of pressing a hot key to bring up a radial menu you will double click any clickable target in the game world.
RADIAL
The first part of the addon is the radial menu. Whenever you double-click a mob or a friendly player in the game world, you'll get a circle (radial menu) with all the raid target icons around the cursor. If the target does not have a raid target icon, moving your mouse over any of them will assign that icon to the target. If the target is marked, moving your mouse over that icon will un-mark the target. Clicking with your mouse inside the circle will dismiss the radial menu.
DIMMED ICONS
The addon also tries to keep a live list of raid target icons used (only those set by yourself, it doesn't scan targets) and dim out any icons used already so that the unused ones are more prominent in the bar and radial menu.
This addon is based up GnomeCharmer by Rabbit which in turn was based on the addon ezIcons.