>Grey is old, pink is new. <g>
I hate grey. But actually thanks for the hint - I'd use something bluish (62,158,255) for the old and a warm color for the new - maybe a 240,159,11 or so.
>>I did. When I'm working on two versions of the same project, I put different background colors for _screen in the two instances of Fox that I'm running, and also different _screen.caption, so I know where I am. Now if there was a color which would immediately scream "this is the new" and another for "this is the old", I'd be glad to adopt them :).