I believe you can make a custom theme and style the class of those titles.
From using inspect, the title has 3 classes:
title raw-link raw-topic-link
I assume that changing the
color property of one of these classes will change the color of the titles.
That style means the topic was already read by you, and there is no new posts from your last visit.
New users and anonymous users will see it differently.
Thank you for your quick response. But as in the image there is topic “Brainstorming ideas” and I haven’t read it and it is marked by the blue dot but the text is still appearing dull. Can you help me with that?