Lcdtester is a project mainly written in ..., it's free.
Simple program to check LCDs for things like dead pixels or color correctness.
This program is just a simple Python script that goes fullscreen and allows you to change the color shown on the fullscreen in a convenient way.
Requirements:
Installation/Usage:
Just change into the dir with the 'lcdtest' file and execute it with:
./lcdtest
or
python ./lcdtest
If you want to install it, copy the file into /usr/bin or wherever.