title: Change bar colors plotly
body: <p>Here is my code.  I've done this before and it's worked.  I want the negative bars to be red and the positive bars to be green but I'm just getting all yellow.</p>
  <pre><code>import pandas as pd
  import plotly.express as px
  
  deciles = pd.read_csv('https://github.com/ngpsu22/2016-2018-ASEC-/raw/master/deciles.csv')
  
  fig = px.bar(deciles, x=&quot;deciles&quot;, y=&quot;percent_change&quot;,
               text='percent_change',
               height=800,
              labels={
                       &quot;percent_change&quot;: &quot;Percent change&quot;,
                       &quot;deciles&quot;: &quot;Decile&quot;
                   },
              color_discrete_map={'10th': '#6aaa96',
                                  '20th': '#6aaa96',
                                  '30th': '#6aaa96',
                                  '40th': '#6aaa96',
                                  '50th': '#6aaa96',
                                  '60th': '#e67f83',
                                  '70th': '#e67f83',
                                  '80th': '#e67f83',
                                 '90th': '#e67f83'})
  
  fig.update_layout(
      title='Average percent change in real resources per person',
      xaxis_tickfont_size=14,
      yaxis=dict(
          title='Percent change in real resources',
          titlefont_size=16,
          tickfont_size=14))
  fig.update_traces(textposition='outside')
  fig.update_traces(texttemplate='%{text}%')
  fig.update_layout(uniformtext_minsize=14, uniformtext_mode='hide', xaxis_tickfont_size=16)
  fig.show()
  </code></pre>