In Shrek there is a scene in which Shrek gets shot in the butt with an arrow. To distract Donkey Fiona sends Donkey into the woods to find a blue flower with red thorns. Donkey exclaims that it would be easier to do if he wasnt colorblind. From my understanding donkeys arnt actually colorblind, so is Donkey himself colorblind, or was this a production error assuming donkeys were colorblind?

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  [1]: https://i.sstatic.net/mzWGV.jpg