If you thought that ‘Mandy’ moved too fast for you, the boys cover another Panos Cosmatos film that might be more your speed. Despite what you may have heard, ‘Beyond the Black Rainbow’ is not a sequel to last week’s ‘Black Rainbow’, and is probably closer in tone to ‘Reading Rainbow’. Indeed, you watch this one under the right circumstances (recommended) and those butterflies will truly be flying twice as high, but don’t take a look at the mad doctor’s book in this…