WordNet sense 1 (acting with or marked by or resulting from great force or energy or emotional intensity):

violent

WordNet sense 2 (glaringly vivid and graphic; marked by sensationalism):

shocking

WordNet sense 3 (causing intense interest, curiosity, or emotion):

sensational

WordNet sense 4 (weak in color; not colorful):

colourless

WordNet sense 5 (emitting or reflecting light readily or in large amounts):

bright