added colors and finished up tests

Author: Kully

plotly/figure_factory/_bullet.py

@@ -165,6 +165,7 @@ def _bullet(df, markers, measures, ranges, subtitles, titles, orientation,
     return fig
 
 
+# TODO: replace scatter_options with None in function signature
 def create_bullet(data, markers=None, measures=None, ranges=None,
                   subtitles=None, titles=None, orientation='h',
                   range_colors=('rgb(200, 200, 200)', 'rgb(245, 245, 245)'),