Incidentally, I disagree with the good colonel when he says that if you are armed, you "must be in yellow." I believe that's a generality that's quite situational, not an absolute.
For example, last night, returning late at night from a long day up north, with someone else in the driver's seat, I napped in the car most of the way home. Napping, of course, would be the ultimate condition white. The gun remained safely on my hip the whole time, which was the most reasonable place for it to be under the circumstances.
But then, I have excellent carry gear and a generally relaxed attitude toward life.
My personal website: Cornered Cat