           'ref-y': .5
           ref: 'path'
           'y-alignment': 'middle'
-          fill: '#AAAAAA'
+          fill: colorCoord
           'font-family': fontFamily
     }, joint.dia.Element::defaults
   }

          d: "M #{height / 2} 0 L #{height} #{width / 2} #{height / 2} #{width} 0 #{width / 2} z"
          transform: 'translate(' + (-height / 2) + ', ' + (-width / 2) + ')'
          'stroke-width': 0
          fill: '#EEEEEE'
        '.decision':
          'font-size': fontSize
          'font-weight': 'bold'

  switch transition.message
    when 'true'
      message = 'T'
      color = colorTrue
    when 'false'
      message = 'F'
      color = colorFalse
    when 'anything'
      message = ''
      color = colorAnything
  cell = new joint.shapes.fsa.Arrow {
    smooth: false
    source:
