public void Handle(ISession session) { ChatSession chatSession = session as ChatSession; ChatUser user = chatSession.Owner; user.ChatThemeSettings.BackgroundId = Theme.BackgroundId; user.ChatThemeSettings.BackgroundBlur = Theme.BackgroundBlur; user.ChatThemeSettings.BackgroundColor = Theme.BackgroundColor; user.ChatThemeSettings.Use = Theme.Use; user.ChatThemeSettings.IconColor = Theme.IconColor; user.SaveChatTheme(); user.Send(this, chatSession); }