Thomas Electronics in the US supposedly still makes and repairs CRTs for military and aerospace, but those will be much smaller than you'd want for a TV or monitor and often if not always monochrome. Even if they did make big colour tubes they wouldn't give mere mortals the time of day anyway, they're in it for the big money contracts.
Thanks.
I think I may have already known that at one point, but I'll try to include this the next time I am motivated to brain-dump some CRT lore.