This app was mentioned in 2 comments, with an average of 1.00 upvote
Yeah I'm jealous of my brothers OPX's. The screen is beautiful. I know you don't use themes on your OPO but since you'll loose the dark amoled oos theme on the opx you should use this.
https://play.google.com/store/apps/details?id=com.pippo96.oxygenred
Use arcus to unpack it and get the amoled themes https://play.google.com/store/apps/details?id=pixkart.arcus
OxygenCM is absolutely the best, I've tried many of them. (I use OPX red variant of this theme.) It is a paid theme, though.