Cleanup and fixes.

library/src/main/res/drawable/md_btn_selected.xml

@@ -7,7 +7,7 @@
     <shape xmlns:android="http://schemas.android.com/apk/res/android"
         android:shape="rectangle">
         <corners android:radius="@dimen/md_action_corner_radius" />
-        <solid android:color="#DFDFDF" />
+        <solid android:color="#E5E5E5" />
         <padding
             android:bottom="@dimen/md_button_padding_vertical"
             android:left="@dimen/md_button_padding_horizontal"

library/src/main/res/values/dimens.xml

@@ -4,8 +4,7 @@
     <dimen name="md_dialog_frame_margin">24dp</dimen>
     <dimen name="md_title_frame_margin_bottom">16dp</dimen>
     <dimen name="md_title_frame_margin_bottom_list">4dp</dimen>
-    <!-- 64dp + 8dp (left and right insets) -->
-    <dimen name="md_button_min_width">48dp</dimen>
+    <dimen name="md_button_min_width">42dp</dimen>
     <!-- Above and below buttons, 36+12=48 for the height of the button frame -->
     <dimen name="md_button_inset_vertical">6dp</dimen>
     <dimen name="md_button_inset_horizontal">4dp</dimen>