id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
920	recoloring surf after bumps-coloring gives TypeError unsupported operand type(s) for +=: 'NoneType' and 'int'	Elaine Meng	Tom Goddard	"After using ""bumps"" with ""surfColor true"" on a volume surface, applying a single color to that surface gives a traceback, e.g.

color #2 purple
Traceback (most recent call last):
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/cmd_line/tool.py"", line 201, in execute
cmd.run(cmd_text)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/commands/cli.py"", line 2550, in run
result = ci.function(session, **kw_args)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/commands/color.py"", line 159, in color
ns += len(mlist)
TypeError: unsupported operand type(s) for +=: 'NoneType' and 'int'
"	defect	assigned	major		Volume Data								all	ChimeraX