title: How to use color_palette and fill_palette in ggbarplot?
body: <p>I'm using this code <code>ggbarplot(cell_tidy,"label","n",fill = "groups",color = "label",position = position_dodge(),add = "mean_se",palette = c("white","royalblue4"))+theme_classic2()
  </code>
  and I obtained this: <a href="https://i.stack.imgur.com/4nmPB.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>I want to change only the color palette as a function of label, I have tried <code>color_palette</code> but I received this error <code>Error in !is.null(facet.by) | combine : 
    operations are possible only for numeric, logical or complex types</code></p>
  
  <p>Thanks in advance for the help!</p>