I agree with the positives AND the negatives, with one exception--don't particularly care for Yellow Submarine. I'd prefer "Big Yellow Taxi" by Joni Mitchell, or (as David Acaster suggested) "Mellow Yellow."

Some additional colors:

Duke Ellington, "Mood Indigo"

Hello Saferide, "Raspberry Lips"

Robert Earl Keene, "Paint the Town Beige"

The Monkees, "Shades of Grey" (surprisingly good)

Caravan, "The Land of Grey and Pink" (two colors in one title from this important prog legend)

Manfred Mann, "Everyday Another Hair Turns Grey"