tag requires a 'drawable' attribute or child tag defining a drawable

エラーが出る方

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
	<item
		android:state_focused="true"
		android:color="@color/color_focused" />
	<item
		android:state_pressed="true"
		android:state_enabled="false"
		android:color="@color/color_pressed" />
	<item
		android:state_enabled="false"
		android:color="@color/color_disable" />
	<item
		android:state_active="true"
		android:color="@color/color_enable" />
	<item
		android:color="@color/color_normal"/>
</selector

itemの中にcolorを書いていたので、
itemとcolorを分離した。

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
	<!-- focus -->
	<item android:state_focused="true">
		<color android:color="@color/color_focused" />
	</item>
	<!-- press -->
	<item 	android:state_pressed="true"
			android:state_enabled="false">
		<color android:color="@color/color_pressed" />
	</item>
	<!-- diable -->
	<item android:state_enabled="false">
		<color android:color="@color/color_disable" />
	</item>
	<!-- enable  -->
	<item android:state_active="true">
		<color android:color="@color/color_enable" />
	</item>
	<!-- default -->
	<item>
		<color android:color="@color/color_normal"/>
	</item>
</selector>