In Europe, I might give the Duchy of Lorraine a distinctive colour rather than just leaving it in the generic "HRE member" shade.
EDIT (9pm, GMT):
Much of Chukotka (north-eastern Siberia) is actually outside of Russian control at this stage, and should be shown as such.
The status of the Kurile Islands, north of Japan, might also need considering.
No new colour for Lorraine, after all: Not really enough room for one, and I couldn't decide which NCS shade would be most appropriate anyway.
Chukotka shown as still largely outside Russian rule, but I offer no guarantee whatsoever for the boundary's accuracy: I found a WorldA map for 1750 somewhere in this thread, and took some parts of that border from there, but modified its south-western corner because Wikipedia placed a Russian outpost in that area at that time (and also said that Kamchatka had been occupied by Russia by then, although the 1750 map showed that area -- with what looked suspiciously like its Russian-set administrative boundary -- as also still free..). I've used the NCS 'Siberian' colour for the Chukchi, but in its "with more autonomy" shade to reflect the absence of any unified government among that people.
Kurile Islands re-coloured, the northernmost one (adjacent to Kamchatka) as Russian and the southern ones as "Japan, with second-level autonomy" because those are -- like the southern tip of Sakhalin, for which I'd also used that shade -- loosely controlled by just one Japanese clan rather than by the Shogunate.
Hi, regarding Ryukyu, I don't think the Yakushima island is part of Ryukyu so it should be colored "Japan".
Okay, that's been fixed. Also, on checking further, I found that the southernmost group in the Ryukyu chain was part of the kingdom, after all, so I've recoloured the islands there (those of them that were large enough to show as more than just black dots, anyway) as well. The 'box' around the kingdom has been redrawn to take account of those changes, although there are some outlying islands here & there whose ownership I'm not sure about.
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Also done:
Portuguese trading settlement at Macau, in southern China, added. Yes, it's small and isn't yet actually
owned by Portugal, but then those points apply to the Dutch trading outpost at Deshima in Japan as well and the earlier-made map already showed
that.
I've recoloured Tuscany, again, this time from 'Austria' to 'Bohemia' (which is quite a similar colour anyway) reflecting the facts that it wasn't actually part of the Hapsburg domains as such (Francis having acquired it separately, in exchange for Lorraine) at that point and that Francis was also the elected king of Bohemia. Possibly 'Austria but with more autonomy' would be a better choice, but that seems more appropriate for later generations when its Grand Dukes are descendants of Francis by the Austrian Archduchess Maria Theresa.
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Question:
Is the colour used for part of the area between British and French colonies (south of the Great Lakes & St Lawrence), which I presume indicates organised native tribes, from the NCS chart (where I can't find it) or from somewhere else instead?