Changing Themes (Mac & iOS)
How do I change themes?
Open Twitterrific's sidebar and press the theme button (the center button at the bottom of the panel). Here, you can change to the dark or light theme, select a font, change the font, avatar and line spacing size, and set the in-app brightness.
Press command-', to open the preferences panel and then click the General tab. Select the theme you would like to use from the Appearance selection menu to see the results in real time on the desktop.