Demo of chaging background & Font colour of Well by Selection

I am a well, Change My Colour! You can select and change my background colour & FONT colour.
Change above Background colour and Generate CSS code.Your CSS code will change with new Colour after your colour selection.

Select your favorite color here: Background Font 
<style>
.my_bg-class {
 background: #ffff80;
 color:#000000;
}
</style>


HTML

<div class='well my_bg-class' id=d1> 
  <strong>I am a well, Change My Colour!</strong> You can select and change my background colour.
</div>