title: R shiny: change colour of individual check boxes in checkboxGroupInput
body: <p>I am looking to change the colour of the actual individual check boxes from the standard shiny blue in checkboxGroupInput.</p>
  
  <p>I have found the following code as an answer to this question <a href="https://stackoverflow.com/questions/44958495/coloring-the-checkboxgroupinput-choices?rq=1">Coloring the checkboxGroupInput choices</a> which will change the colour of the font but not the checkbox themselves.</p>
  
  <pre><code>library("shiny")
  
  ui &lt;- fluidPage(
    checkboxGroupInput(
      inputId = "my_cbgi",
      label = "Choose Something", 
      choiceNames = list(
        tags$span("A", style = "color: red;"),
        tags$span("B", style = "color: red;"), 
        tags$span("C", style = "color: blue;"), 
        tags$span("D", style = "font-weight: bold;")
      ),
      choiceValues = c("A", "B", "C", "D")
    )
  )
  
  server &lt;- function(input, output) {
  
  }
  
  shinyApp(ui = ui, server = server)
  </code></pre>
  
  <p>Is there a way to modify this to change the colour of individual checkboxes? Thanks in advance for your help.</p>