The rainbow awaits. Beginning tomorrow, Panini America's popular Prizm Basketball franchise embarks on an exciting new season filled with new colors, new designs and deep rosters of rookies and autographs, including many of them on-card. To be sure, 2015-16 Prizm Basketball picks up right where the brand staple always does, with vibrant Prizm parallels (such Purples, Golds, Blacks, Ruby Waves,…