Color Text in android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

   android:layout_width="fill_parent" 

   android:layout_height="fill_parent" 

   android:orientation="vertical" >

<TextView

    android:id="@+id/text"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:text="@string/tv" />

<Button

    android:id="@+id/button"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:textColor="@color/opaque_red"

    android:text="@string/BTN" />

<EditText

    android:id="@+id/editText1"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:text="@string/hello"

    android:textColor="@color/opaque_red" />

</LinearLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="app_name">Tutorial</string>

    <string name="action_settings">Settings</string>

    <string name="hello_world">Hello world!</string>

    <string name="hello">Hello</string>

    <color name="opaque_red">#f00</color>

    <string name="BTN">Hello, I am a Button</string>

    <string name="tv">Hello, I am a TextView</string>

</resources>