Sexy speakers: Need Help Picking a Sub

[Big Daddy]

The Duevel Planets omni dispersion speakers from Urban Fidelity are beautiful, sexy, and affordable.

The Spheres
Not only do the chrome spheres get everyone talking, but they also function as precision wave guides designed to disperse sound in a perfect 360 degree pattern.

Specifications
Width: 10.2" (260mm)
Depth: 6.14" (156mm)
Height: 32.7" (830mm)
Weight: 22lbs (10kg) each
Minimum Power: 10 watts
Impedance: 4 Ohm
Sensitivity: 85dB SPL

The Cabinet
The cabinets themselves are also finely tuned devices, designed to perfectly compliment the omni orbs and custom drivers.

4.1 Home Theater
A four speaker Duevel package creates the most expansive sound experience in the world. And with identical speakers, the surround sound stays equal and even throughout the full 360 degree radius.

Phantom Center Channel
Duevel omni speakers negate the need for a center channel. By projecting a 360 degree field, the Duevels are able to create such a defined and alive center image that an additional center speaker is just not needed.

Price: $1395/pair
Colors: Silver, red, black, gunmetal, blue or green.

Reviews: http://www.urbanfidelity.com/planets/reviews.php

I plan to buy four (2 red and 2 blue) of them. What I need is a subwoofer that matches their beauty. I don't care about the price as long as the sub matches the speakers. Is it better for all 4 to be the same color? This is a picture of the planned setup.