title: pickerInput font or background color
body: <p>I am using pickerInput in my shiny dashboard, which is fine except for one issue:  The background color and font color are too similar, making the filter choices difficult to read.  </p>
  
  <p><a href="https://i.stack.imgur.com/0G1la.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0G1la.jpg" alt="enter image description here"></a></p>
  
  <p>Is there any way to change either the background or font color?   I'd like to continue to use pickerInput if possible, but if there's a method with selectInput or anything else that'd be fine.</p>
  
  <p>Sample of one of my pickerinputs that produces the result in the screenshot:</p>
  
  <pre><code>output$typeOutput80 &lt;- renderUI({
    Commodity.Name &lt;- as.vector( unique(DF2()$Commodity.Name) )
    pickerInput("typeOutput80", "Commodity:", 
       choices=Commodity.Name, Commodity.Name [1:10000], multiple=TRUE, 
       options = list(`actions-box` = TRUE, `live-search` = TRUE, 
                      `selected-text-format`= "static", title = "Commodity List")
    )
  })`
  </code></pre>