Specs for colours! Added a pretty extensive validation suite.
Removed .DS_Store and added it to .gitignore
Added a to_hex method to Integer, that uses rjust to ensure that 0 becomes 00 in hex. Added an initializer to implement it.
Started refactoring the colormap module. Added a rake task that will create it, and mapped all of our database's color hex codes to create the map.
Woohoo! Rake task successfully creates a colormap with the 774 colors we have in the DB.