International Orange?

Question

Was the Launch Entry Suit, the pumpkin suit, the first time any space agency used the color International Orange in anything intended to go into space?

From International orange; Astronautics:

The Advanced Crew Escape Suits pressure suits worn by NASA astronauts and the previous Launch Entry Suit use this color,^4,5 as opposed to the lighter tone of safety orange used by the United States Air Force's high-altitude suits. This was also planned for the new Constellation Space Suit systems that were to be flight-ready by 2015.

⁴Why Are Astronauts' Spacesuits Orange?

⁵NASA - The Spacesuit. Archived from the original on 2010-05-20.

Source click for full size.

Is "international orange" the intent of those suits? Or is it visibility in possible low visibility scenarios? I think most color choices are functional. — Magic Octopus Urn, Sep 14 '19 at 02:26
I've added some links, feel fee to roll back if you think it's too cluttered. — uhoh, Sep 14 '19 at 04:00
Related, not duplicates: https://space.stackexchange.com/q/31982/26446 and https://space.stackexchange.com/q/87/26446 — DrSheldon, Sep 14 '19 at 07:30
The Wikipedia article does not explain what's supposed to be "international" about the color. In fact it seems to me to be entirely made up -- none of the references it provides support that name in particular. — hmakholm left over Monica, Sep 14 '19 at 13:30
@MagicOctopusUrn Notably, the so called "black boxes" on aircraft, despite the name, are also that color for the same reason. — Darrel Hoffman, Sep 14 '19 at 18:01
@darrelhoffman the black boxes' name alludes to black box programming- right? — Magic Octopus Urn, Sep 15 '19 at 02:15