#50: yet another Attack Of The Clones CGI issue - Ki-Adi-Mundi’s lightsaber changes colours in the battle on Geonosis…

At the beginning of the Battle of Geonosis, Ki-Adi-Mundi’s lightsaber is blue. When he is seen again later in the battle, his lightsaber has changed to green. Finally, when he is seen for the last time, his lightsaber had reverted to blue - which is the color that his lightsaber was meant to be.

Or this 50 second video on how the post-production error for the lightsaber colour… resulted in a later ‘in-universe explanation’:-

www.youtube.com/watch?v=1fOt-o0WQHk - from the Red Five youtube channel.