ColorToHex turns a color.RGBA into a hexadecimal color code e.g.

ExactlyOne returns true iff one of the given booleans is true.

HexToColor turns a hexadecimal color code (e.g.

RemoveWhitespaceStrings removes any strings from the input slice that contain only whitespace and trims whitespace from the remaining lines.

UniqueStr removes duplicates from a string slice.

RGB is an alias for color.RGBA but with JSON marshaling methods that convert to & from hexadecimal color codes.