Not able to Change display bar color for few screens in Android

I've got an application below for which I want to change color of display bar which is all right for home screen but for all other activity screens it is displayed as white, see in below picture:

Following is my style.xml:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>  
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" >
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" >
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.kushal.boulders">
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <application
        android:name=".App"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <uses-library android:name="android.test.runner" />
        <activity
            android:name=".activities.SplashActivity"
            android:noHistory="true"
            android:theme="@style/SplashTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".activities.MainActivity"
            android:label="@string/app_name"
            android:launchMode="singleTop"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.HOME" />
            </intent-filter>
        </activity>
        <activity
            android:name=".activities.LoginActivity"
            android:label="@string/title_activity_authentication"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.RegistrationActivity"
            android:label="@string/title_activity_registration"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.UserProfileActivity"
            android:label="@string/title_activity_userprofile"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.MemberProfileActivity"
            android:label="@string/title_activity_member_profile"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.AddMemberActivity"
            android:label="@string/title_activity_addmember"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.EditMemberProfileActivity"
            android:label="@string/title_activity_editmember"
            android:theme="@style/AppTheme.NoActionBar"></activity>
        <activity
            android:name=".activities.AboutActivity"
            android:label="@string/title_activity_about"
            android:theme="@style/AppTheme.NoActionBar"></activity>
    </application>
</manifest>

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