BY KASSONDRA CLOOS kassondra.cloos@gazette.com -Rags Over the Arkansas River, also known as ROAR, has filed a brief asking the Colorado Supreme Court to reverse its decision to allow an art installation that would cover six miles of the river with fabric panels.ROAR argued in its brief that the Colorado Parks Board's actions and Court of Appeals decision to support them threatens the state Constitution, according to a press release the organization sent on Thursday.The Colorado Parks Board violated its own regulations by allowing the project, by artist Christo, ROAR says, but the Court of Appeals found its actions to be "harmless.