Judging not only from the evidence of hats preserved but also color photos/illustrations I think it could be stated with some confidence that the most frequent colors were in that order:
Greys, browns/tans, black, greens and blues. Other colors to a lesser extent.
Pure white doesn't seem to be too frequent - it's usually a very light grey or tan shade.
The choice of hat color certainly depended largely on suit color. Blue, grey and brown suits were by far most popular.
And for US suit color sales we have these charts:
http://oldmagazinearticles.com/draw_pdf.php?filename=Color-Trends.pdf
Oh, my gosh, I recall the peacocks of the late Sixties! Johnny Carson, usually a suit-and-tie or sport jacket-and-tie man (though never did he look like the stereotype of the flashy used car salesman) even appeared one night wearing a Nehru jacket, and if I recall, a turtleneck under a tuxedo. Everybody below a certain age was experimenting.. . . The icon of 1950s fashion conformity is the "man in the grey flannel suit." There was a brief "Peacock Revolution" of day-glo colors and artificial fabrics seen in the late 60s-early 70s. But I recall even in the 1980s, John T. Molloy's celebrated "Dress for Success" book warned readers away from black suits. He said they were too sombre, funereal, and overpowering for most men and anything but formal (black tie) events. . . .
Steven, you have some of the most amazing velours! That crystal is just stunning. And i love the historic catalog and other information you post.
Here's what the various sources I have read when researching historical clothing have said. I don't claim to be an expert and am ready to learn from those who have more info. But here's what I have read:
Black dyes were unstable and complex so in Elizabethan times, black was by far the most expensive color in clothing. It also was great for showing off jewelry. Both of these facts made it popular with her courtiers, although not nearly as popular as it would become later. As you can see in paintings from the Renaissance, men wore lots of rich, bright colors in those days as well.
We can also see that black clothing became very popular in Protestant parts of Europe during the 1600s. One needs only think of the Puritans or the Dutch merchants in all those portraits by Rembrandt and Franz Hals. I don't know if newer, less-expensive black dyes had been developed, although it would seem odd for the Puritans to choose black as a symbol of simplicity if it were in fact extravagant.
For those of a less Puritanical persuasion, bright colors remained fashionable right through the 1700s, as we can see in the portraits of artists like Gainsborough.
The fashion for black evening formal wear is generally credited to Beau Brummel, who was active during the Regency/George IV period around 1800. He believed in simple cuts, fine fabrics, and subdued colors. His influence is strongly felt in menswear's overall conservatism. He also popularized the blue jacket, neckties, and the white shirt.
The Victorian era certainly saw more affordable clothing produced by the industrial revolution. It also saw sooty air from the new factories and railroads. Both made black an affordable and desirable color for everyday men's clothing. There's no question that black became a standard daytime color during this period.
When I look at ads from the 20s-40s, I see a lot more adventurous use of color than was common in the Postwar US. However, blues, greys, and browns were the mainstays of mens clothing I've seen. I think the more casual looks that gained popularity after World War I often came in colors other than black, as that color began to seem formal, old fashioned, and become associated with butlers and morticians. Although there was no shortage of black hats. And I would agree that Europeans enjoyed more color options than American men.
The icon of 1950s fashion conformity is the "man in the grey flannel suit." There was a brief "Peacock Revolution" of day-glo colors and artificial fabrics seen in the late 60s-early 70s. But I recall even in the 1980s, John T. Molloy's celebrated "Dress for Success" book warned readers away from black suits. He said they were too sombre, funereal, and overpowering for most men and anything but formal (black tie) events.
Well, I thought I would jot down a few bits, but this has turned into a real ramble. So I'll sign off now. I hope this info is some help and would love to learn more from those with wider knowledge.