As said above, Officer rank insignia is already on blue backing as it is a light blue band on a dark blue backing.
In the past some over-zealous NCOs use to try to enforce that officers couldn’t wear the back insignia. As a Plt off I did upset a few FSs when pointing them out as wrong & putting them back in the box.
The sub due rank backing for officers is what isn’t permitted & as said above won’t change.
Interestingly also illustrated/discussed before.
https://forum.aircadetcentral.net/t/blue-rank-slides-unless-youre-an-air-cdre/7586?