I was viewing some pictures on my Mini 9, after a while, I realized the colors were very bad. The default color temperature was set way too cool/blue for photo viewing. So I took my i1 monitor profiler out and did a profile for my display.
I'm attaching the profile here. Download it and try it out yourself.
NOTE: To have the best possible colors, the profile should be made on the display the computer is connected to. Since the components in the Mini, the LCD panel, could be different from one batch to the next. But this profile should be OK for the casual users out there. My Mini 9 is the Apr 09 build.
1) Download the file and unzip it to your Mini. The default folder for ColorSync is /Library/ColorSync/Profiles, but it doesn't matter where.
2) Open ColorSync, open Devices pane, highlight Display
3) Click the arrow next to "current profile", and select the profile you downloaded just now.