Filter is stuck in night time mode. You can put your thumb off and on the light sensor while taking pics to try and free it. You should hear a clunk sound everytime the filter transitions. If that doesn't work a few whacks with the palm of your hand will often knock it loose.
Don't know how you would fix that issue. Maybe bring it to the house, put it in pic mode and take a bunch of pics in a bathroom while flipping the light off and on. Maybe making the filter do alot of transitioning would work out the kinks.
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