I know this is a bit late, but puzzling SE's birthday is today or yesterday or really near right now, so I wrote out a birthday message for the site.
However, I accidentally spilled my unicorn frappuccino all over my computer screen, and the magicalness (Disclaimer: This is probably not a word.) of the unicorn bled into my screen, scrambling up all of my messages in meaningless letters and blobs of color.
Also, the unicorny (this one isn't either) powers of the unicorn frappuccino seemed to have boggled my brain a bit, making me forget what I was writing originally. Can you help me retrieve the message?
I've put the puzzle up as link form, for I do believe that the StackExchange uploading process does slightly distort the colors, so for maximum accuracy, I've decided to just provide a link to a spreadsheet.
Here, just in case, I'd like to note that the unicorn stuff isn't actually a part of the puzzle.
Also, not sure what tags to add to this puzzle.