Wanted to see if this was possible. It's not perfect but I think it's serviceable.
And I made different versions so you can decide what looks good.
(I would've made the ears just straight but they wouldn't fit the template hence why I tried different options)
I covered up the in game eyes with...
Based on @RajasGrime's 'Bunny Ears Hairband' mod, this mod makes it RGB adjustable. This one was also amazingly easy to make RGB adjustable though I did have to make a few more touches on this than his 'Demon Horns' mod.
Note that while this is a .swf file, it was made as a Vanilla mod - that is, it has no dependencies (as far as I'm aware, at least).
The outfit, however is a Loader mod and thus has dependencies. You can find the outfit here: Velvet Scarletina Outfit (Also note that there are links to the...