DENVER — Colorado will begin punishing habitual drunken drivers with felonies and longer prison sentences. The new law is among dozens taking effect Aug. 5. Now a fourth DUI conviction will be punishable by up to six years in prison and a fine of as much as $500,000. Previously, repeat drunken drivers were only charged with misdemeanors with up to a year in jail. Law enforcement agencies will also have access to records of misconduct for officers they want to hire.