styles.xml

<resources>
    <!-- Theme for SwitchDateTime -->
    <style name="Theme.SwitchDateTime" parent="Theme.MaterialComponents.Light.DarkActionBar">
        <item name="colorPrimary">#29b6f6</item>
        <item name="colorPrimaryDark">#03a9f4</item>
        <item name="android:textColorPrimaryInverse">#e6e6e6</item>
        <item name="android:textColorSecondaryInverse">#e1e1e1</item>
    </style>

    <!-- Header Background -->
    <style name="Theme.SwitchDateTime.HeaderBackground">
        <item name="android:background">?attr/colorPrimary</item>
    </style>

    <!-- Content Background -->
    <style name="Theme.SwitchDateTime.ContentBackground">
        <item name="android:background">#00ffffff</item>
    </style>

    <!-- Title -->
    <style name="Theme.SwitchDateTime.TitleDateTimeLabelText">
        <item name="android:textSize">@dimen/title_date_time_label_text</item>
        <item name="android:textColor">?android:attr/textColorPrimaryInverse</item>
        <item name="android:textStyle">bold</item>
    </style>

    <!-- Icon -->
    <style name="Theme.SwitchDateTime.IconDateTimeSwitch">
        <item name="android:src">@drawable/ic_view_carousel_black_32dp</item>
        <item name="tint">?android:attr/textColorPrimaryInverse</item>
    </style>

    <!-- Time  -->
    <style name="Theme.SwitchDateTime.Time">
        <item name="timeCircleColor">#e1e1e1</item>
        <item name="timeCenterColor">?attr/colorPrimary</item>
        <item name="timeAmPmBackgroundColor">?attr/colorPrimary</item>
        <item name="timeAmPmSelectBackgroundColor">?attr/colorPrimary</item> <!-- Alpha is apply-->
        <item name="timeAmPmTextColor">?android:attr/textColorPrimaryInverse</item>
        <item name="timeSelectorColor">?attr/colorPrimary</item>
        <item name="timeCircularNumbersColor">#494949</item>
    </style>

    <!-- Time Label -->
    <style name="Theme.SwitchDateTime.TimeLabelText">
        <item name="android:textSize">@dimen/time_label_text</item>
        <item name="android:textColor">?android:attr/textColorSecondaryInverse</item>
    </style>

    <style name="Theme.SwitchDateTime.TimeLabelAmPm">
        <item name="android:textSize">@dimen/time_label_AmPm</item>
        <item name="android:textColor">?android:attr/textColorSecondaryInverse</item>
        <item name="android:textStyle">bold</item>
    </style>

    <!-- Date -->
    <style name="Theme.SwitchDateTime.Date">
        <item name="mcv_selectionColor">?attr/colorPrimary</item>
    </style>

    <!-- Date Label -->
    <style name="Theme.SwitchDateTime.DateLabelMonthAndDay">
        <item name="android:textSize">@dimen/date_label_month_and_day</item>
        <item name="android:textColor">?android:attr/textColorSecondaryInverse</item>
    </style>

    <!-- Year Selected-->
    <style name="Theme.SwitchDateTime.Year">
        <item name="colorCircleIndicator">?attr/colorPrimary</item>
        <item name="android:textColor">?android:attr/textColorPrimaryInverse</item>
    </style>

    <!-- Year Label -->
    <style name="Theme.SwitchDateTime.DateLabelYear">
        <item name="android:textSize">@dimen/date_label_year</item>
        <item name="android:textColor">?android:attr/textColorSecondaryInverse</item>
        <item name="android:textStyle">bold</item>
    </style>
</resources>