title: Rails + bootstrap-sass mixins
body: <p>Maybe I don't understand how to use mixin with sass, or how to work with the ones with bootstrap-sass (https://github.com/thomas-mcdonald/bootstrap-sass).  But how can I do something like change the box-shadow on a class of input fields?  </p>
  
  <p>EDIT: Should clarify, in this example I'm trying to change the glow effect on an active input field when it is selected.  By default it's blue.  </p>
  
  <p>For my project setup, I have it just like it says on the github page and have the gem in the Gemfile and then in a controller I have something like:</p>
  
  <pre><code>@import "bootstrap"
  .testInput {
    /*(here I have put a variation of variables that I change to see 
    if I can do something with the mixin like $bordercolor: #000;*/
    @include formFieldState()
  }
  </code></pre>
  
  <p>So maybe my understanding of how sass works is way off.  I guess if I wanted to change the box-shadow for inputs I could just repeat the code in my own mixin but it was also just kind of a general question on if this kind of thing was possible with the other mixins as well.</p>