title: How to add custom color in Xcode storyboard color picker?
body: <p>I am planning to make theme color of UI elements in application.
  how we show custom color(Golden Color) like Black color in picker menu</p>
  
  <p><a href="https://i.stack.imgur.com/SdISZ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/SdISZ.png" alt="enter image description here"></a></p>
  
  <p>is it possible? like we can add custom Property as shown in snapsho<a href="https://i.stack.imgur.com/p5zBl.png" rel="noreferrer"><img src="https://i.stack.imgur.com/p5zBl.png" alt="enter image description here"></a>t</p>