Fixed bug and Pyflakes error in the Colorize ViewOperation
Fixed bug and Pyflakes error in the Colorize ViewOperation

vascotenner/holoviews,vascotenner/holoviews,mjabri/holoviews,ioam/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews,basnijholt/holoviews,mjabri/holoviews,ioam/holoviews,basnijholt/holoviews,mjabri/holoviews