Absolutely impossible to keep clean. The Corps had Summer Tropicals, back in the 70's. Peanut butter colored. Summer weight wool shirt and trousers, matching wool field scarf, and also cotton khakis, 3 sets of each, With garrison and overseas covers. (The wool shirts doubled as winter shirts under the green winter weight blouse.)
You learned, quickly, that the slightest smudge on your fingers would transfer to your shirt pocket flaps and trousers. It's why you kept your wallet and butts in your socks.
You also used a cheap pair of white gloves to fasten your belt buckle, and then do not touch it for the rest of the day, lest you fingerf#ck your brass or smudged your cotton belt, which you had scrubbed with toothpaste to get it the properly accepted "salty" color...
You think you had troubles consider the poor swab that had to wear Navy Whites. The only pockets were the watch pocket that was sure to be soiled by a finger. Chalk was the only cure for tropical ports.