With Unity's free membership, employees could only use the white theme. But this situation has changed after version 2019.4.8.

Unity has activated the black theme (Dark Editor Theme) for all types of subscriptions for those using this version and later.

To use Unity Editor as a black theme, you need to do the following steps.

• 1 - Click "Edit" for Window and "Unity" for Mac/Linux from the menu above.
• 2 - Click on the "Preferences" section.
• 3 - Click the "General" section on the left from the drop-down menu.
• 4 - Select "Dark" from "Editor Theme" on the right.