@NonNull
    public TrustedWebActivityIntentBuilder setToolbarColor(@ColorInt int color) {
        mIntentBuilder.setToolbarColor(color);
        return this;
    }
Sets the color applied to the toolbar and the status bar, see
{@link CustomTabsIntent.Builder#setToolbarColor}.

When a Trusted Web Activity is on the verified origin, the toolbar is hidden, so the color
applies only to the status bar. When it's on an unverified origin, the toolbar is shown, and
the color applies to both toolbar and status bar.
customtabs/src/android/support/customtabs/trusted/TrustedWebActivityIntentBuilder.java