Colors
constructor(background: PaywallColor, text1: PaywallColor, text2: PaywallColor? = null, text3: PaywallColor? = null, callToActionBackground: PaywallColor, callToActionForeground: PaywallColor, callToActionSecondaryBackground: PaywallColor? = null, accent1: PaywallColor? = null, accent2: PaywallColor? = null, accent3: PaywallColor? = null, closeButton: PaywallColor? = null, tierControlBackground: PaywallColor? = null, tierControlForeground: PaywallColor? = null, tierControlSelectedBackground: PaywallColor? = null, tierControlSelectedForeground: PaywallColor? = null)