My gecko's least favorite time is when I take it out to give it's habitat a thorough clean. But man does it color up good in protest. Here you can see a real strong difference in color during the day when my gecko isn't all riled up....

and when it's all riled from being put into a temporary holding cage while I clean the bigger one.

It doesn't even color up this good at night! Go figure.
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"I've got a fever and the only cure is more cow bell!"