Thread:Dominus001/@comment-32769624-20200202104617/@comment-44807868-20200204135604

For changing the colors, you'd use CSS. Help:Infoboxes/CSS explains about it. Let me know what color you want for the infoboxes if you can't figure it out.

And do you mean you want your pages to pop up on search engine results for certain searches you mentioned, e.g. on Google search results? If so, that's not really what categories are, their job is to organize a group of articles covering a similar topic. There're countless complicated factors behind what you seem to be asking, there isn't a particular step that can guarantee to give you that. Help:Search Engine Optimization sheds light on it.