The Final Jump: dark art

I'm experimenting with different art for the game. Here's the dark version.

The light version does not look that good, but plays much better because brick types are distinct enough and it's clear what you can do. Maybe I should look for a third art style, something like Braid?

I'm not sure what to do next. I got a lot of puzzles prepared but don't want to waste time making the, just to have to redo everything if I decide to change the art style.