Curiously we've gotten a number of concerns about maybe the branding will push people away by thinking that the goblins are evil or scary or will frighten children, but we've never actually had anyone tell us that it actually invoked that reaction in them, just that they're concerned about it. And a lot of people seem to really like the goblins.
We do have a light theme called "airy"; there's some debate about whether that theme should be default. The choice of a dark theme isn't to invoke something dungeon'y, it's to put spotlight on the media, making the media the "light" of the scene. But anyway, maybe at some point we will switch over to airy by default... we'll see what the future brings.
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