I bounce between InDesign, Illustrator, and Photoshop continuously and often realize after trying something that I'm in Illustrator, not InDesign. If there were a subtle unobtrusive way to indicate this, so it 'feels' like Illustrator that would be nice. I don't mean overboard, like Microsoft's Word blue, Excel's green. Something I can change until I find something I like. An indicator in the toolbar? Does this exist already and I don't know?