Merge "Tweak CallStyle Answer button color to ensure white text" into sc-dev

    <!-- The color of the Decline and Hang Up actions on a CallStyle notification -->

    <color name="call_notification_decline_color">#d93025</color>

    <!-- The color of the Answer action on a CallStyle notification -->

    <color name="call_notification_answer_color">#1e8e3e</color>

    <color name="call_notification_answer_color">#1d873b</color>

    <!-- Keyguard colors -->

    <color name="keyguard_avatar_frame_color">#ffffffff</color>