在style.xml中使用

<style name="BlueCalenderView" >
        <item name="colorAccent">@color/desired_color</item>
    </style>

如果你想改变天的颜色

<style name="CalenderViewDateCustomText" parent="android:TextAppearance.DeviceDefault.Small">
        <item name="android:textColor">@color/desired_color</item>
    </style>

如果你想改变周的颜色

<style name="CalenderViewWeekCustomText" parent="android:TextAppearance.DeviceDefault.Small">
        <item name="android:textColor">@color/desired_color</item>
    </style>

最后，在布局中：

<CalendarView
            android:id="@+id/calendar"
            android:theme="@style/BlueCalenderView"
            android:weekDayTextAppearance="@style/CalenderViewWeekCustomText" 
            android:dateTextAppearance="@style/CalenderViewDateCustomText"
            ..... />