PatchyHero's

So: Tumblr, when I try to customize my theme for “mrpatch.tumblr.com” I get this blackness… and an rgb setting on the right… and it appears that the “customize-classic” workaround no longer works?

I like my theme at the moment, but it would be kinda nice to be able to edit it if I wanted to. Thanks much for any help.

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