Changing gamma (color settings)

I have a desktop computer with a graphics card that shows everything to be darker. This was VERY annoying when viewing YouTube videos, because it felt like I was viewing the world through extra-dark tinted glass. This is the procedure for correcting a graphics card with poor settings.
  1. Download the files xorg_BASIC-7.0.pet and xorg_VIDEO_DRVRS-7.0.pet from http://ftp.nluug.nl/ftp/pub/os/Linux/distr/puppylinux/pet_packages-2/ .
  2. Install both of these xorg PET packages.
  3. If you are currently using Xvesa as your X window, go to Menu -> Setup -> Xorg Video Wizard and follow instructions on selecting screen settings. This changes your X window to Xorg.
  4. Go to http://links.twibright.com/calibration.html to figure out the appropriate color settings on your computer.
  5. Type the following commands (replacing "(number)" with the number for the appropriate color setting): 
    	
	xgamma -rgamma (number)
	xgamma -ggamma (number)
	xgamma -bgamma (number)

Saving gamma settings

This is the procedure for automatically adjusting the color settings every time you start up Puppy Linux.
  1. Click on the File icon at the top left corner of the desktop screen.
  2. Go to the Startup directory. All scripts in this directory are executed when Puppy Linux starts up.
  3. In the window, Right Click -> New -> Script
  4. Right-click on script file -> Open As Text
  5. Enter the above xgamma commands to the file, and save the script file.