title: Color of gridlines and background
body: <p>It seems that this question <a href="http://r.789695.n4.nabble.com/ggplot2-Change-color-of-grid-lines-td827813.html" rel="noreferrer">fist appeared</a> around 2007.</p>
  
  <p>The question is this:</p>
  
  <p>How to change gridline and background color when plotting with ggplot2 in R? I add two pictures as an example on what I mean by background and gridline color.</p>
  
  <p>Back in 2007, Hadley Wickham said that appearance functionalities were missing (this included changing the color of background). Does anybody knows if there's an update that allows to change the background color and the color of gridlines?</p>
  
  <p>Thanks in advance</p>
  
  <p><img src="https://i.stack.imgur.com/Gw0hs.png" alt="before">
  <img src="https://i.stack.imgur.com/unfRA.png" alt="enter image description here"></p>