How change the orange color from Light Theme?

How change the orange color from Light Theme? sample image

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Theme.Titanium" parent="android:Theme">
        <item name="android:windowBackground">@drawable/background</item>
    </style>
    <style name="Theme.MyTheme" parent="@android:style/Theme.Light">
        <item name="android:editTextStyle">@style/editText</item>
    </style>
    <style name="editText" parent="@android:style/Widget.EditText">
        <item name="android:textCursorDrawable">@null</item>
    </style>
</resources>