You'll need to show a little effort here now. Hint: check the array if the colour already exists before pushing it onto itself, perldoc -f grep, or use a hash for the colours as well, if the order doesn't matter.

update: Also, please see How do I post a question effectively? for the use of <code></code> tags (they are for code *and* data), and use the Preview button to ensure all of your tags are closed etc.