Add css class to all posts of topic starter

Please add CSS class which indicates all posts of topic starter in this thread. Something like ipsComment_topic_starter.

I.e. while i've startd this topic, i need to have this class added to article element in all my further posts.

I know there are some apps on marketplace which allows to style posts of topic starter but they does not work properly in some cases and provides also a lot of useless additional functionality. I'd like to have just that simple change in IPS by default.