I'm not studying Jasper Johns' color palette. I'm using this particular image of one of his works to contemplate my color preferences. Could be the sun penetrating to grass or (as the title suggests) lightly falling snow.
All of the base colors are the same brightness and lightness (tints of four colors, basically). They suggest luminousness and joy and dancing and summer warmth. Yet, why I like this piece probably has more to do with pink than the other colors, although I like tropical aqua, too.