Doesn't explain the popularity on that list of orange. I have no fondness for orange (my HN topcolor is a soothing 7BB6F0) and have always been a bit of a loss to figure out why it figures so much. It also tends to be the same shade of orange - whereas at least with blue you get a bigger range.

Yes it does. Orange is the complement to blue so orange will also look good on a blue screen.