@NonNull
    private Bundle makeSplashScreenParamsBundle() {
        Bundle bundle = new Bundle();
        bundle.putString(SplashScreenParamKey.VERSION, TrustedWebUtils.SplashScreenVersion.V1);
        bundle.putInt(SplashScreenParamKey.FADE_OUT_DURATION_MS, mFadeOutDurationMillis);
        bundle.putInt(SplashScreenParamKey.BACKGROUND_COLOR, mBackgroundColor);
        bundle.putInt(SplashScreenParamKey.SCALE_TYPE, mScaleType.ordinal());
        if (mTransformationMatrix != null) {
            float[] values = new float[9];
            mTransformationMatrix.getValues(values);
            bundle.putFloatArray(SplashScreenParamKey.IMAGE_TRANSFORMATION_MATRIX,
                    values);
        }
        return bundle;
    }
Sets the colors of status and navigation bar to match the ones seen after the splash screen
is transferred to the browser.
customtabs/src/android/support/customtabs/trusted/splashscreens/PwaWrapperSplashScreenStrategy.java