First off, your Spanish wiki looks freaking amazing. I hope you don't mind if I'm taking some of your template ideas!
Now to the point, do you mind helping me recreate a template specifically on your front page that showcases all the seasons for Breaking Bad? The one where if you hover your mouse over it, it'll have a "T1, T2, T3, T4, T5" logo? Thanks! Reply ASAP!
So, having all that done, I added a switch code to the templates in order to choose different colors in each article. This is the change that I did (by default, templates are green, but if I add |serie=BCS to the article, it turns to orange).
For the main page I just changed the green class to the orange one in some of the sections.
Don't know if I'm good at explaining this, but I'm really glad to help, so feel free to ask more!