"I've never seen a blue PX-10, and I never hope to see one ..."
I have seen exactly one blue PX-10, owned by a fellow passenger on our bicycle-friendly commuter rail line (
https://gonctd.com/services/coaster-commuter-rail/), and lots of white ones. When I worked at a Peugeot/Nishiki dealership in the early 1970s, all of our P*-10 bikes were white. My boss had to have a PX-10 as his personal bike, but he gave up trying to break in the Brooks Pro saddle after about a week -- best $5 I ever spent on a bicycle component.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069