MyBB Community Forums

I recently made new icons for whenever there is a new post and when there is none. But the forum theme I am using is called Flatty, and the forum icons for new/old posts is part of that theme where you can't find the icons and simply replace them.

Does anyone know how to replace the new/old post Flatty icons (the blue chatbox icons) - https://i.gyazo.com/9e10afce298ca009af9f...5693f2.png

My Forum using the Flatty theme: http://skylandsacademy.com/index.php

EDIT: Nevermind, the solution is fixed.