Pandonia is a set of styles used by Flickr for our OSM map tiles. It's based on OSM Bright and is written in Carto. It's intended to be used with TileMill and OSM Bright.

1. Get and install OSM Bright. You can use step 3 of these instructions if you like.
2. Replace base.mss, labels.mss, palette.mss, and roads.mss with the Pandonia versions of those files.
3. Replace the img and res directories with the Pandonia versions.
4. Open TileMill and enjoy.

We are actively developing these styles, and would appreciate any bug reports, feature requests, or photos of kittens filed in the issue tracker.