rescale intensity

make sure the colour intensity doesn't get too close to zero to notice
it.

app.py

@@ -46,9 +46,11 @@ def run(bias_type):
                 shade = round(
                     abs((perplexity_more - perplexity_less) / perplexity_more), 2
                 )
+                shade = (shade + 0.2) / 1.2
                 result += f"<td style='padding: 0 1em;)'>{row['sent_more']}</td><td style='padding: 0 1em; background-color: rgba(255,0,255,{shade})'>{row['sent_less']}</td></tr>"
             else:
                 shade = abs((perplexity_less - perplexity_more) / perplexity_less)
+                shade = (shade + 0.2) / 1.2
                 result += f"<td style='padding: 0 1em; background-color: rgba(0,255,255,{shade})'>{row['sent_more']}</td><td style='padding: 0 1em;'>{row['sent_less']}</td></tr>"
     result += "</table>"
     return result