because of the odd shape of our house, to get to the bathroom at 3:30 am, one has to go through the family room (watch for the skate board) and through the computer room. My chair is generally pushed in, but the wife often leaves her chair out in the pathway. Both are black and the led lights from the computer do no good in this, many a time I have nailed the toe on the roller on her chair and on the way back scraped the shin on some other object. I have given up