Note: not the Ultramarines http://warhammer40k.wikia.com/wiki/Ultramarines

But considered their chapter colors, the name just got another dimension to it.

I always thought that was an intentional pun.

Nifty. Worth noting that today, we have a synthetic ultramarine widely available and cheap in a Blue and a Violet hue; there was a Green hue but that's not currently being manufactured and isn't easily available.

Joy to read - thanks for posting!

Ditto, enjoyed.

Nice, thanks