title: How to change material button disabled state background color in my theme?
body: <p>I am using Material design components in my android project.</p>
  
  <p>My promblem is that i cannot change <strong>DISABLED</strong> background color of the material button (<a href="https://material.io/develop/android/components/material-button/" rel="noreferrer">https://material.io/develop/android/components/material-button/</a>).</p>
  
  <p>I want to change <strong>DISABLED</strong> color in my theme, but i cannot figure out how to do this.</p>
  
  <p>I tried looking at <code>Widget.MaterialComponents.Button</code> style and  I found out that it has <code>"backgroundTint"</code> property:</p>
  
  <pre><code>&lt;item name="backgroundTint"&gt;@color/mtrl_btn_bg_color_selector&lt;/item&gt;
  </code></pre>
  
  <p>But it does not have disabled state style, see below:</p>
  
  <pre><code>&lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
    &lt;item android:color="?attr/colorPrimary" android:state_enabled="true"/&gt;
    &lt;item android:alpha="0.12" android:color="?attr/colorOnSurface"/&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>I can always add it myself, but where does initial greyed out color of a <strong>DISABLED</strong> button come from?</p>
  
  <p>What is the best way to change this color globally in my theme?</p>
  
  <p>P.S. I am using <code>Theme.MaterialComponents.NoActionBar</code> theme.</p>
  
  <p>Thanks!</p>