Don't forget to ping the SubtlePatterns guy as this takes away a fraction of his pageviews (the site is ad-supported) and piggybacks on his content. I'm sure he wouldn't mind, but it'd be a nice gesture to make.

Already done––Atle (the owner) has been very helpful. But thanks for the suggestion.

This is pretty amazing! If only I could apply this to something other than body for a certain site, I'd be set!

Thanks, I'll add this as an advanced option since I agree the default "body" selector doesn't always work.

The bookmarklet tries to load the script and possibly other assets (I didn't check) from an insecure domain. This will cause any sane browser (I'm using Chrome) to block those assets from loading on any site served via https.

I would suggest you serve those assets via https if at all possible.

Thanks for sharing, this is cool.

Is it possible to preload the image before applying the style? The flashes to what I think is the normal bg image and image loading progress thing makes it harder to compare backgrounds.

Absolutely––this is high on the priority list.

This rocks! I just added one to (one of) my for-fun side projects here http://quantumrandom.com/ after playing with the bookmarklet. Thanks for sharing this.

Hi! This couldn't have come at a better time as this is something on my ToDo list. However the bookmarklet isn't working on my site. The URL is www.randomdailyness.com. Any insight would be awesome!

Awesome! Much needed.

Though I'm seeing some requests blocked in Chrome (maybe AdBlock? or something else) when trying to use the bookmarklet on an HTTPS site.

This is really timely and really damn useful. The bookmarklet in particular is great. Nice work!

Cool man! What in store for the future? More Patterns? Customizable anything?

Absolutely fantastic. Thanks for taking the time to develop.

This is awesome. I'm impressed with how easy it is to use.