This is my first time doing a dead/stuck pixel text. I have a 24" iMac. There was 1 black dot showing at the exact same spot (just off center left) on every color I tested. Red Background- did not see any more than the 1 black dot at the same spot Blue Background- saw 2 black dots. Green Background - did not see any more than the 1 black dot Black Background - I saw 3 white dots at various places on the screen, including 1 white dot where the above mentioned black dot is on the other colors. White Background - I saw a black dot in the same place I saw it on the other background colors, plus a multi-colored dot a few inches away. What do I conclude from this? I guess I have one dead pixel for sure. But as for the other colors, I'm not sure how to interpret this, especially for the Black background test.