[Graphic✓] Text and Menu Boxes

I'm tired of the plain ones used in FireRed, so I would like to know how to implement my own. Not only that, but is there a way I can use the ones from the Options menu to have it default/permanent. So instead of starting off with the plain white one with rounded edges and a blue border, I could begin with the more square one with red sides?

I would like to add my own though, but in case I can't, I'd like to change the default text box to one a little more appealing/less vanilla.

It's pretty easy to do. They're bookmarked in default NSE so easy to find and change in there too.