Ability to change Workfront proof viewer background color

[#1]

Description - Ability to change proof viewer background color

Why is this feature important to you - ability to view pdfs with black backgrounds/borders

How would you like the feature to work - An additional setting within the settings are in proof viewer?

Current Behaviour - with background being black it it difficult to preview pdf final proof edges as designed by artist/art director etc

[#2]

We often have digital banners and POP items that print on solid black, and we cannot see where the edge of the proof is from the background of the proofing window. Is there a way to adjust this?