id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
544	"""set bgcolor"" seems to have died"	Elaine Meng	Tom Goddard	"Now I get a traceback from ""set bgcolor"" including by clicking the background-color Graphics icons or typing the command directly.  Clicking the white-square Graphics icon gives:

set bgColor white
Traceback (most recent call last):
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/shortcuts/tool.py"", line 47, in button_press_cb
ks.run_shortcut(keys)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/shortcuts/shortcuts.py"", line 373, in run_shortcut
sc.run(self.session)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/shortcuts/shortcuts.py"", line 270, in run
commands.run(s, f)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/run.py"", line 31, in run
return command.run(text, log=log)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 2257, in run
result = ci.function(session, **kw_args)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/set.py"", line 40, in set
view.background_color = bg_color.rgba
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/graphics/view.py"", line 262, in set_background_color
color[3] = 0	# For transparent background images.
ValueError: assignment destination is read-only

ValueError: assignment destination is read-only

File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/graphics/view.py"", line 262, in set_background_color
color[3] = 0	# For transparent background images.
See log for Python traceback.
"	defect	closed	major		Command Line		fixed						all	ChimeraX