Its kinda hard to explain, but outside the canvas its usually a light grey color, randomly today it went really dark o.o Pretty much explains it. How do i set the color of the outside to default?
I saw how to fix this on another website but i cant remember. Try resetting everything to the default presets.
Figured it out Hold Control + Alt + Shift -> Then go to Start and go to Photoshop CS2. It will then ask if you'd like to delete the settings file. Hit yes, and all it will be reset.