Subsolar is a Textual theme inspired heavily by Sublime (for typography) and Solarized (for color).
Because I'm on IRC all day every day, I decided it was worth investing a bit of time to try to make it look better. This is the best I can come up with so far, and I'll improve it over time.
While choosing colors, I made extensive use of the Solarized cheat sheet.
To use, first find where your Textual themes are located. This will probably work for you:
$ cd ~/Library/Group\ Containers/8482Q6EPL6.com.codeux.irc.textual/Library/Application\ Support/Textual/Styles/
Next, just clone this project there:
$ git clone git@github.com:shiflett/subsolar.git
Restart Textual, then under Preferences, you should see a new style called subsolar.
If you have any trouble, just let me know, and I'll try to help.
Go ahead; judge a book by its cover.
By popular demand, subsolar-dark is coming soon.
