Hi Rob ~ Congratulations, now THIS is a Scharnhorst! As requested via e-mail, my 0.02 ...
I assume the red banner around the swasticas may have been RAL 3010 - this is today's 3020. It is lighter in appearance. I assume you understand the principle of "scale-effect". On a model, not all colours need top be enlightened. A few need to be darkened. E.g. red, when viewed from a greater distance, can appear darker than it is. What I'm trying to say is, that your darker RAL 3011 (Feuerschiffsfarbe Rot) may have been too dark to be spotted from an airplane at greater distance. Btw, didn't the red banner span the whole width of the deck? (I really should broaden my SH knowledge...).
Then, your RAL 7016 anti-glare coating on top of the bridge and rangefinder hoods. As mentioned earlier, I think it was RAL 7024. The 7016 was in use on the dark grey steel decks (and the boot topping) - if they painted the roofs on SH for this camouflage pattern in dark grey at all, I don't have proof of this. If they did, then they did so on all roofs (maybe except for the hangar).
Your 8013 looks fabulous! Not too brown, not too red.
Then, when looking at the top view, I highly (highly!) doubt the circular 'patches' beneath the 105mm being wood-planked. There was just 7016-painted steel deck with possibly rubber stips, maybe linoleum strips, maybe welded strips, but no wood anywhere. If you have definite proof that there was unpainted wood, please send a photo my way. Interestingly, you have the steel deck in two different shades of grey.
The funnel platform would have been 7016, too.
The boats - as far as I know - where not incorporated into the camouflage livery. They may have stayed in their original livery of 7016 (or black) lower hull (except for the small cutters), 7001 upper hull plus wooden (mahogany-coloured) cabin, deck, cockpit. (like the two boats directly at the funnel, but with wooden decks). But again, I may be wrong on this.
The wooden crated panels on the open bridge and the wooden slatted panels in the foretop gallery: Great colour, just a bit darker as the teak decks, just what I imagine when looking at b/w photos. Why are there only a few of the crated panels on the open bridge?
Life rafts ~ This is where I'm not sure. I have to look it up, but I think it was RAL 7012. I don't remember if this was in the 1941 or in the 1944 paint regulation. Another choice could have been RAL 1003 (yellow) as seen on (1941) colour photos of KM ships. Life rings where red, RAL 3010 (although I've seen red life rafts as well ...).
Phew, not much more comes to mind, should I look deeper?
Again, nice job, I wish I could virtually walk along the decks, climb up the ladders, etc. etc ...
Happy drawing ~ Olaf!