When the colors are the message

Every pixel has red, green and blue values from 0 to 255, the same range as the letters in ASCII. Some puzzles are just a strip of colored squares where each square's three values spell three letters, or where the hex color codes, like #436163, read as text.

CacheCrack detects the size of the squares, reads them left to right and top to bottom, and shows the result as text or as a list of hex codes. Try the other options if the first one is not readable: one color channel at a time, or brightness.