title: hex color calculator: change color for twitter bootstrap buttons
body: <p>OK, I'm trying to rewrite the color for Twitter Bootstrap buttons (for example, for <code>.btn-primary</code>). </p>
  
  <p>As far as I see, there are several colors that are defined for .btn-primary so they have all fixes for all browsers.</p>
  
  <p>The easiest way I see it to write all the colors for .btn-primary and "move" them to the same difference as new basic color is differ from the basic color of btn-primary, that is actually <code>#006dcc</code> as I see from <code>bootstrap.css</code>.</p>
  
  <p>Is there a calculator to easily change the color like:</p>
  
  <pre><code>newcolor=(006ecc-006dcc)+aaaaaa=aaabaa 
  </code></pre>
  
  <p>so that I shoudn't split each color into 3 hex numbers and find the difference for each 3 pairs of each color?</p>
  
  <p>Or, is there any easier correct way to change color with keeping gradients, hovers, fixes for all browsers for Twitter Bootstrap buttons?
  Thank you in advance.</p>