The first Rose Parade that was broadcast in color was in 1954. I saw it at a neighbor’s house who had a color TV on loan from RCA (he had worked on its design).
https://www.facebook.com/eyesofageneration/posts/the-first-rose-parade-color-castnbc-january-1-1954this-was-the-first-ever-nation/775933415777543/
Nice!