Change background color using 'Configure Event Handler'

I bound the back ground value of a label to the click of a button. What is the correct syntax to change the value?

value = ‘?’
event.source.parent.getComponent(‘Label a1’).background = value

I’ve tried

value = ‘238, 238, 238’, value = ‘238, 238, 238, [255]’, value = ‘gray’ with no success.

Try this:

value = fpmi.gui.color(238,238,238,255)

http://www.inductiveautomation.com/support/usermanuals/factorypmi/source/technical/jython/modulesgui.htm#color

-Dan