Here's a filter that makes pictures more faded and less saturated. It would be pretty good for a theme. It's also a great selfie filter. -- DM me your unfiltered pics to use in my posts!! I'll give credit if I use yours :)
Photoshop help Don't get caught up in purchasing a zillion actions. It can all be done in plugins like Nik Filters and Topaz filters with much more flexibility. Actions take a while to run, the filters are faster.