6. Click Color and the colour curve is displayed. Experiment with the sliders: Gamma (which bends the line up or down in the mid-ranges), Brightness (to move the line up or down its axes) and Contrast (to change the slope of the line and adjust contrast). The entire screen will change to demonstrate the effects.
7. The colour controls adjust the colours for desktop and application display, but there are separate controls for the video overlay layer. Select Video, Overlay/Videovision to access sliders for gamma, brightness, contrast, saturation and hue. Adjust these to suit your needs.
8. If you're using your monitor for viewing TV, you might like to add 720p and 1,080i to the list of available screen modes in the Displays Manager. Select Monitor Properties, HDTV Support and tick the appropriate box(es). But check that your monitor can support these modes before trying this, or you could damage it.