calibrate
The rainbow starts with magenta and ending with red. There should be a smooth transition from color to color with no banding and no little dots. Change your system settings to 24 bit on the black and white bar you should have pure black on the left side and pure white on the right side of the bar below. only the first box appears 100% black and the second box displays as a dark grey. Similarly only the last box should appear 100% white and the next to last box should be a light grey.
