Comment 32 for bug 1022216

I'm agree with you, Cassidy and Harvey, the actual theme it's awesome when you use it for a while, the big problem comes when you use some apps, because you don't know which are opened. It forces me to use Super + A to know wich apps are opened.
Why don't think in a kind of indicator? I'm not talking about the dots at the bottom of icons, why don't you try to make the dock colour change, like the one to indicate the last used app, but used for every running app?

I'm going to post a screenshot of what I want to say, because it's difficult to explain.