[add] fucolor utility: colorize vars in futhark output
[add] fucolor utility: colorize vars in futhark output

ihc/futhark,diku-dk/futhark,diku-dk/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,diku-dk/futhark,HIPERFIT/futhark