The Crystal Cave is made for the purpose of previewing potential color change and then applying them either with the items in your den, or credits. Simply select the things you would like to preview, then apply it if you wish.
Step 1: Select any options from the bottom of the page to preview your rabbits 'reflections' (a reflection is a preview). All selections are optional. Your rabbits will retain their current colors if nothing is selected. Step 2: Click 'Preview Reflections' to see what your rabbits could look like with the options you selected. You can move from page to page (rabbits are ordered according to your main rabbits sort options, which can be changed on your main rabbits page). Step 3: If you see any bunnies you like, you can apply the changes either with your den items or credits.