Hi Kvn479,
I don't have the mentioned "Royal Pop" style and I don't know where to buy it.
BUT: In the Bonus Playlists of the SX600/700/900 models there is a Registration Bank "Radio Ga Ga" (in the subfolder "Pop&Rock"). This Registration uses the Preset Style "80sRockBeat" ("Pop&Rock" category). Have you tried this style yet?
Hope this helps!
Best regards,
Chris