Use
Supercal! I just used it, and my opinion of the LCD on the Glassbook went up from thinking about returning it, to, the only reason I would return it, is to get the 2.4GHz instead of the 2.0GHz.
Follow the instructions and ask questions if you have any.
Also, don't use the crappy built in calibrator. If you use that accoring to the instructions, it gives everything a blue tint. UGH! Supercal actually calibrates RGB levels. It takes about twenty minutes, but it could save you from standing in a return line.
Place any downloaded profiles in Library/Colorsync/profiles. Go to display properties and uncheck "show profiles for this display only." THe new profile should show in the left pane.
EDIT:
This is the same profile I posted earlier. I just renamed it so it is not so confusing. It is named JC Display. Here is an instruction guide.
Step 1: Download the attached zip profile, if you want mine, or any profile in this thread or on the internet for that matter.
Step 2: Unzip the file(it will unzip as JC Diplay,this could be different if you are using someone else's).
Step 3: Move the file to one of these strings(it could be different for each person):
System(icon looks like a hard drive)/Library/Colorsync/Profiles/Displays
or
System(icon looks like a Hard Drive)/Library/Caches/Preferences/Colorsync/Profiles/Displays
If the folder does not exist you need to create one by following these steps:
Go to: System preferences>Displays>Color>Calibrate
The system will walk you through a custom calibration. Accept the defaults. All you are doing is creating a folder. You don't care about any of the settings for this calibration bacause you aren't going to use this for very long.
Name it "Custom Calibration(Delete)"
Close the calibration window.
Now remember the unzipped profile you downloaded? Place it in the folder that was just created.
Step 4: Go to: System preferences>Displays>Color
Step 5: Uncheck the box that says "Show profiles for this display only."
Step 6: Select the profile you downloaded from the left hand pane window. You should notice a difference in the color/contrast/brightness on your screen. You can go from profile to profile and select the one that best suits your needs.
A good way to do this is select a photo you like, and know what it should look like. Open it and cycle through the profiles on your display preferences pane. The profile named "Color LCD"(above the line) is the original profile.
Now, if you had to create the new custom calibration in order to create the missing folder, you can delete that now. Select "Custom Calibaration(delete)" from the left pane. Make sure it is highlighted and select "Delete" from the right side of the window.
If you would like to try your hands at a custom calibration you can use the Apple calibration tool by selecting "Calibrate" and checking the box "Expert mode" on the next window. Or you can download and try your hands at SuperCal. You don't have to buy superCal. But if you find it useful, dontate. Which means you buy it for $19. For SuperCal you follow the steps given by the program.