habitica-android/Habitica/res/values/styles.challenges.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools">
    <style name="ChallengeName">
        <item name="android:fontFamily" tools:targetApi="jelly_bean">@string/font_family_condensed
        </item>
        <item name="android:textSize">16sp</item>
        <item name="android:textColor">@color/text_primary</item>
    </style>

    <style name="ChallengeTaskDetails">
        <item name="android:fontFamily" tools:targetApi="jelly_bean">@string/font_family_regular
        </item>
        <item name="android:textSize">12sp</item>
        <item name="android:height">20dp</item>
        <item name="android:textColor">#8a000000</item>
        <item name="android:maxLines">1</item>
    </style>
</resources>