Acrobat DC User Interface: Change theme Light/Dark

Hi!

I hope you are doing well and thanks for reaching out.

From the description, I can understand that you want to change the UI theme in Acrobat? If yes, you can choose the available themes in Acrobat from the View menu of Acrobat > Display Theme > and can choose from the following options: 

1. System theme.
2. Light Gray.
3. Dark Gray.

I hope this helps. to know more about What's new in Acrobat, please see this article.

Thanks,

Anand Sri.