now i tried out the fullscreen mode. my game is 800x600x16. the game looks awful when played fullscreen. the graphics have soft gradients, but the fullscreen mode changes them to big full colored lines. i changed my monitor resolution to 800x600, too. the same. i changed the monitor quality from 32 to 16 bit. the same.
it is somehow strange, because the game size in window and fullscreen is the same, but the colors behave not the same. in "ugly" mode, the game runs much faster. here at 80fps, and in windowed mode only with 30fps....