ENH: Brain.add_data() kwarg colormap can be lut
ENH: Brain.add_data() kwarg colormap can be lut

haribharadwaj/PySurfer,mwaskom/PySurfer,Eric89GXL/PySurfer,diego0020/PySurfer,bpinsard/PySurfer,nipy/PySurfer,effigies/PySurfer