[Steven Aquino, in a post with Josh Centers, about the Solarized color theme (with a Nitti Light font equivalent)][1]:
> After using this setup for the last couple weeks, I can say with confidence that the combination of Cousine and Solarized Light is great for writing. More importantly, as a visually impaired person, I find the combination to be extremely comfortable for my eyes. Between Cousine’s clean design and the contrast of the background, I’m experiencing considerably less eye strain than normal.
I love this setup: Ulysses III + Solarized + Nitti Light. I’ve been using it since the moment I had my hands on the Ulysses III beta, and it’s fantastic. I have a few things to add to their post.
First, you can get [Cousine][2] from a non-Google source for free, but I haven’t used the font before so that’s about all I know about it.
Secondly, your font size is almost as important as the font itself. I just checked and Ulysses III is showing that I have Nitti Light selected as my font at about 16.9 points, with a 1.6 line height. I’ve been using that for quite a while and it’s the sizing that seems most comfortable to me — just don’t feel bad making the font bigger, or smaller, if you need it to be.
Lastly, Ulysses III has a bug that I have found with Nitti light. Specifically it seems that selecting the body font as a light weight instead of a normal weight screws with the syntax highlighting a bit. Where light is the body weight and bold becomes the highlighted weight — when I personally feel setting your font to a light weight should make the normal weight the highlighted weight. I don’t know if this is a fix that is coming down the line or not, and for some this might drive them crazy.
*[Ulysses III][3] is $39, and worth every penny — [Nitti Light][4] is (roughly) $78 and is also worth every penny (I bought the whole suite).*
[1]: http://tidbits.com/article/13966
[2]: http://www.fontsquirrel.com/fonts/cousine
[3]: http://www.ulyssesapp.com
[4]: http://www.boldmonday.com/en/nitti