The one on "Syntax highlighting" tab is not as well-thought. I recommend to change it to the drop choice similar to the one on "IDE" tab. At the moment we can have these entries
1. light theme (stick with light theme, what the "white theme" buttom will do currently);
2. dark theme (stick with dark theme, what the "Dark theme" button will do currently);
3. "Use host theme"(similar to what the similar one on "IDE" tab would do);
4. "Use default colors" ( what the Restore default colors button would do).