The cover of Technicolor Health, the debut full-length from New York's Harlem Shakes, depicts a rainbow over a desolate city street in a serious state of disrepair. Power lines wilt, trees teeter, telephone poles tilt, and chunks of broken down buildings spill onto the sidewalks. But has the rainbow beam come to the rescue, or is it responsible for the destruction? No doubt the Shakes, with their brand of today's fashionable guitar pop sounds-- a fusion of folk, global-pop, and good ol' fashioned indie rock-- mean to project the former interpretation. The music exudes a kind of clear-eyed optimism that can only come from seeing the worst but looking forward to the best, and indeed the band has acknowledged hearkening back to the hearty, happy (or at least happier) days of the early 1990s, not in terms of the music but in terms of the national everything-is-still-possible mood.