title: Flutter how to create Multi Card and select a color
body: <p>I am new in flutter, I want to create multi card with some option and select a option then change color. In my code when click one option number but all of color same change, please help to fix it.</p>
  <p>link all code
  [https://github.com/gunartha/Multi-Question-and-multi-selection-with-color-option]</p>
  <p><a href="https://i.stack.imgur.com/XVTow.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XVTow.png" alt="enter image description here" /></a></p>