Most of us think of using colour in documents that we are designing for print using a colour laser printer or colour mfp. We often don't think of how colour can be used for other things.
In a recent article in PC Magazine author Jill Duffy makes a great case for using colour electronically to improve your productivity and comprehension. Her article describes a method to colour code your folder structure in your PC, either Mac or PC, to make it easier to work with your data.
I have to admit that this is not something I ever thought of doing till I read this article. I am a power user of folders in Outlook and in Dropbox. I structure much of my saved material read more here