title: Unable to pass color variable in included layout using Data Binding
body: <p>I want to pass a variable of color to included layout, currently, I'm trying to pass color from my colors.xml and I've added variable type <code>'android.graphics.Color'</code> but it's not working, what should be the type of variable for Color in exact?</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;layout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  
      &lt;data&gt;
  
          &lt;import type="android.view.View" /&gt;
  
          &lt;variable
              name="isLoading"
              type="Boolean" /&gt;
          &lt;variable
              name="loaderColor"
              type="android.graphics.Color" /&gt;
      &lt;/data&gt;
  
      &lt;com.wang.avi.AVLoadingIndicatorView
          android:layout_width="@dimen/btn_loading_indicator"
          android:layout_height="@dimen/btn_loading_indicator"
          android:layout_gravity="center"
          android:visibility="@{isLoading?View.VISIBLE:View.GONE}"
          app:indicatorColor="@{loaderColor}"
          app:indicatorName="LineSpinFadeLoaderIndicator" /&gt;
  &lt;/layout&gt;
  </code></pre>
  
  <p>main layout</p>
  
  <pre><code>&lt;include
                      layout="@layout/layout_btn_loading_indicator"
                      app:loaderColor="@{@color/theme_color}"
                      app:isLoading="@{viewModel.isLoading}" /&gt;
  </code></pre>