Thanks for your suggestions, ppl. The pix above shows what I mean about the swatch in the tools window not matching the 50% gray that I choose in the color picker. I have color management turned off but I made sure that the correct monitor is selected in the Color Settings dialog anyway. No change. Also, Proof Colors on the View menu is unchecked, BUT if I make a custom Proof Setup and specify "Working RGB - NEC MultiSync FE2111SB" (my monitor) then turn proofing ON, the greyscale image looks correct, however, the color swatch in the tools window still looks like above, so I've a feeling that isn't quite the fix! Thanks again! - Bill Here's what I've found out