^Probably. The colour scheme of Windows is light blue also, which was standard on Win 3.1x SVGA drivers (S3 for example).
Which in turn often need 386 Enhanced-Mode to run (only a few do support Standard-Mode).
Windows for Workgroups 3.11 (386+) had used this colour scheme, too, I guess.
Normal VGA driver of Windows 3.1x had dark-blue colour, by contrast.
So I guess Windows might not be running in Standard-Mode (WIN /2 or WIN /S)..
Speaking of, in case of Windows 3.1x, DOSX isn't being executed on 386+ systems anymore,
but krnl386.exe (for both Standard-Mode and Enhanced-Mode).
In order to force DOSX/krnl286.exe, it can be started manually.
C:\WINDOWS> C:\WINDOWS\SYSTEM\DOSX
But that's another story. I also think that the DPMI16 isn't being used, likely.
Edited.
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