Who knows the name of the book with the color tests in it so you can identify
colorblindness? I used it when I taught right out of college in the mid
'60's, and only students who were colorblind could see the numbers or letters
on the pages. The rest of us just saw lots of colors. I remember the pages
looking like a mosaic of randomly placed colors, but they obviously weren't
Terry in Garland, TX, where it's warming up a little.