Preference
You can customize ZStudio's themes, display language, and behaviors to suit the way you're used to working.
Themes
In ZStudio, open the Color Theme picker with click gear icon (Preferences) in the bottom-left corner and select Color Theme. You can also use the keyboard shortcuts Ctrl+K > Ctrl+T to display the menu. And in the pop-up menu, select the theme you want to switch.

You can search for themes in the Extensions view. If you find one you want to use, install it and the new theme will be available after restart ZStudio.
tip
Please visit Open VSX Registry to find more themes. To use the theme in this website, you need download and install it via Extension view.