Who's Responsible for Coloring this Shield?

[enthauptet]

Nidhogg one is black and ebil looking, the lore one is also dyeable and mainly black.

[Elleia]

Other than the already suggested Kinna blade/shield, you could try the Horde shield/blade from Nidhogg:

http://i.imgur.com/95N0106.jpg

Or the Zurvanite shield:

http://i.imgur.com/KOJiFy9.jpg

[Darkstride]

This looks okay to you? It does not clash well at all!

If the weapon matched I think it would be fine. The Ramuh gear carries the red to coordinate with your gear and the purple particle effects carry a somewhat voidsent appearance which, in my opinion, suits the "evil" look.

But as I mentioned before, if you don't like the particle effect, then just use the basic Thunderhead (non-mighty version). You'll still have a little glow, but not the lightning and sparks.

[Bloody]

Kinna Shield or bust.

[SenorPatty]

You're not a Warrior. You're rolling on PLD.

Pretty sure this is a troll everyone. Ignore and he'll go away.

He's no troll. Just very melodramatic with a hint of flamboyance.

[Xerek]

If you don't mind not having particle effects, the Heavy Metal Greatshield is an odd duck. 99% of the shield is black, with gold trim...yet it's the trim that's dyable. XD ...so you can have a nasty looking black shield with red trim.

[Galactimus]

I like the Alexandrian Metal Buckler dyed Dalamud Red. Fits the whole edgy red / black outfit and looks great with almost any sword.

[Vanitas]

There's nothing edgy about the power of holy light no matter how much jet black dye you slather on your armor :P