Fernando Mumbach@Anna most themes on miui are user created, and there are plenty. I've seen some high contrast ones.
As for fonts, a friend of mine has her phone with a huge comic sans font, without root, so I'd guess it is configurable. Later I'll take a look.
Bobinas P4G is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.
All Bobinas P4G content and data are available under the Creative Commons Attribution 3.0 license.