Only just saw this, sorry for the delayed answer. I think changing the colour on templates completely depends on what template it is. Right now, the one on that page is Template:Newinfoboxtv and, by the looks of things, the colours on this specific template cannot be changed. However, if you were to use Template:NewInfoBox, you'd be able to change the border colours, though this does mean you'll have to re-enter all the information. For whatever reason, header colours don't seem to be working on this template for me, but they seem to be working fine on Template:NewInfoBox/Character. I hope this helps a little bit.
After some experimenting, you can change the colour, but it is very limited and annoying. On the template, go to the bit where it says "style" then after the semi-colon, type "color: [insert colour here]". The reason why this is annoying is because it changes the border and text colours as a whole, rather than individually.
Lol. 8 years ago I was in Year 1. Now that I think about it, Primary School was pretty pointless in itself lol. But I still miss them days. Them times when I use to want to be older now I wanna be younger again, the irony.
I know this was ages back but I just noticed your reply to Talk:Oblivion. Sorry I didn't respond to it sooner.
I imagine my concept of Oblivion (or "Black Space") such a general thing I'd think it be somewhat silly of me to just label it myself so feel free to use it if you want, if you had not yet done so already.
Sorry for not responding sooner. I don't know how to set notifications to note me to article comments or talk pages.
Yesturday on chat, remember our conversation, with how chat used to be and all that, any luck? And have you told anyone about our conversation on chat? Not just the nostolgia part, I mean all of it and by that I mean all of it? Lol (with the whole abuse of power thing).
I know lol. Dodgy Dave as well. I swear they should elect a new priminister after all these dumb laws (well extra laws to be precise) that "Dodgy Dave" has been making. But, I dunno since if that happens we could have ourself another sort of "Donald Trump" situation that is currently occuring though probably without the racism.