DVT SystemVerilog IDE User Guide
Rev. 19.1.31, 5 September 2019
If you want to change the color for all the editors and the interface you can use the Themes feature. Go to Window > Preferences, then navigate to DVT > Themes and select a predefined theme or import a theme file (either old DVT themes or ECT themes).
You can keep the interface in sync with the background color of the editor, from the same preference page.
After applying a theme a restart is required.
Keep in mind that applying a theme will overwrite the color preferences for the selected editors.