chart :line, :small_signups do |c|
  c.axes        = {:x => {:color => "#848D99", :width => 2}, :y_left => {:color => '#848D99', :width => 2}}
  c.plot_area   = {:margins => {:left => 0, :top => 20, :right => 0, :bottom => 35}}
  c.grid        = {:x => {:alpha => 0, :approx_count => 9}, :y_left => {:alpha => 10}}
  c.legend      = { :enabled => false}
  c.indicator   = {:color => '#0D8ECF', :line_alpha => 50, :selection_color => '#0D8ECF', :selection_alpha => 20, :x_balloon_text_color => '#FFFFFF'}
  c.add_graph "Signups this month", :color => "#848D99", :color_hover => "#0D8ECF", :selected => true, :line_width => 2
end