Forum:Bold/Italics in different colors than the rest of the text

Good evening, Wikia Team, for a while now I've been trying to find help/sources on how to change how bolds and italics appear on the wiki I run without having to format every single bold/italic word manually. Basically, what I want is that all bold/italic words across the wiki (forum, walls, articles, profiles, etc) appear in a different color from the rest of the text so they can stand out. I do not know which JS (if it is JavaScript) file should be edited, and what to write in it. That means, whenever someone writes italics and bolds, they appear automatically in another color.

Thanks :)

ps: I hope this is the appropiate forums for this question, if not, my apologies.