Colorization change of topic categories in this forum

IMHO the new styling of topics (various bright colors) is visually distracting making it harder to scan and read the topic titles. The topic title is more important than the topic category and this change indicates otherwise. A more subtle approach might be to border color left and then use a neutral color as the background.

Most users don’t care what the topic category is and that can already be sorted on, so why blind them? What problem does this design change solve?