I made a library for the SparkFun Color LCD Shield. It allows for drawing of shapes, lines, rectangles and strings of text. You can download it here. The Zip contains the library, example sketches utilizing it, and a tutorial that tells you how to use it. Much of this code is addapted from many different people so thanks to everyone involved.
(NOTE) If you have the new Arduino Mega 2560 you need to change line 245 in LCD_driver.h to "#ifdef AVR_ATmega2560"
Other code related to the LCD Shield:
Here are some examples of what can be done with the library: