Haven is a resource pack that I started working on in the early summer of 2017. The goal was essentially to create a pixel art pack that uses the default Minecraft colour palette so it still feels like default, while having a more unified and polished art style. Eventually I plan on making add-on packs for seasonal themes as well as mod support, but that's a ways away.
This pack is still a work in progress, and there's still a lot of work to do, but in its current state, it should still offer a significant enough visual difference to your world to be usable in regular gameplay. If you would like to keep track of what textures are changed and what textures are being worked on, I've organized everything in a spreadsheet which can be found HERE.
All textures are subject to change at any time.