I really like the “Backlight Toggles” launcher mode, which causes all launcher icons to have a colored background if and only if the application is running. This allows me to quickly see what’s running and what’s not. As far as I know this is the default mode for 12.10.
I was missing this feature on Unity2D. It turns out that I was not the only one who looked for help in the Internet in this matter – actually some people would like to use this feature. I’m going to give you a hand with that! As Unity2D is no longer developed, we cannot hope such feature will be ever implemented, so I prepared a simple script that patches few Unity files and enables that behavior immediately!
To get and run the script, use the following: