Changing the edit text's appearance when it's selected, pressed and not selected can be customised easily by adding creating a new style for your edit text like so
<style name="EditTextTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorControlNormal">@color/colorPrimary</item>
<item name="colorControlActivated">@color/colorPrimaryDark</item>
<item name="colorControlHighlight">@color/accent</item>
</style>
And then add this style to your EditText like
<EditText
android:width="wrap_content"
android:height="wrap_content"
style="@style/EditTextTheme" />