I moved my chin into a new cage a few months ago, but was having a problem with her peeing off the ledges and it running down my walls. To save my walls and floors, I covered her cage with a dark sheet (the wires are too small for her to chew the material) and wash it regularly. But I think she's insecure with the sheet blinding her vision, especially of the door, and she hasn't been as willing to come out since (so much so that she'll spray me for so much as putting my hand in the cage for her to hop onto). Is there a different color that I should try? Or material? Or is she just being a brat?