Color Coding the World

I accidentally used the wrong lesson plan for one of my classes yesterday, or at least part of it.  We will just say that the second year students  got a lovely review- up to the point when I told them to open their books to a page that did not exist in their texts.  Flustered, we laughed and I proved my less than perfection to the world once more.  I have now set about to put things in order by color-coding my world!  Each level has their own color of sticky notes, lesson plans and the marker that I use when I have completed an assignment, or to highlight something I want to make sure I cover in class.  Our amazing Administrative Assistant is also going to get me some colored gel pens that aren't red for grading my papers, hoping for purple or green just to liven up the world!  I figure if you get a paper back with green corrections you will see it as a positive color and showing you can "grow" and improve.  Purple is kind of a happy color to me, so maybe it will make the corrections something seen as a positive, not so much negative that they want to throw in the towel!