How to make colours more brilliant

[Rocco]

If I adjust my colors, it is in post. I use Lightroom 4. I tend to increase vibrance and color saturation. At times, I adjust specific color channels, but that is an uncommon event.

Ditto. Thinking about the word "brilliant" makes me think it's the vibrance slider you're after. Even in Photoshop.

If you're using a tool that isn't one of Adobe's offerings, I'm no help to you.

As a question for everyone else, I've always assumed that picture style only impacts Jpegs and not RAW files, is that true?

Picture style most definitely affects raw. Of course, you have more digital info to bail yourself out with. Personally, my camera stays on the "faithful" mode.