our @COLOR_MAGENTA = [0.82745,0.21176,0.50980]; # This is an array, yes?!
No. The term on the right of the equals sign is an array reference, not an array. You assign that to the term on left which is an array so what you end up with is the array @COLOR_MAGENTA the first and only item of which is an array reference which itself has 3 items.
Have you read either or both of perlreftut and perlref? References are a very powerful tool but you do need to know how to use them otherwise you will end up with a lot of similar issues.
