Grateful Dead - Under The Rainbow Rolling TrayGrateful Dead Under The Rainbow Rolling Tray Dancing skeletons started appearing on this band's album art in 1977, when they were seen lined up across the inside cover of the What A Long Strange Trip It's Been LP. With the Under The Rainbow design, these iconic characters each have a different colorful shade of the rainbow and are lined up against a fantasy landscape backdrop as the sun peaks. Skeletons tie into the band's name and much of the