Monteverde Invincia Stealth

This is the most obvious. I tried other inks with this pen. But this pen is so completely, utterly black that any ink color other than black just doesn't seem right. Even Noodler's Lexington Gray seems to be pushing the envelope. This is all very unfortunate, as I don't really care for black ink! (So can someone please explain why I have about 8 samples of assorted blacks?) This is giving me second thoughts about a Parker Premier Black Edition.
Brown Esterbrook J

I've used some blues in this pen, and even a burgundy or two, but I keep coming back to Private Reserve Copper Burst. If I want to stretch the pen's range, it's Iroshizuku Tsukushi (Field Horsetail Brown - a slightly reddish brown). Lots of browns would probably work. Oranges might work, too.
Blue TWSBI Diamond 530

I'm still on my first inking of this pen, but I can't imagine shifting away from blue. Luckily, while I initially found blues boring, I absolutely must have a blue for work, and I've got some blues I find enough out of he ordinary to be interesting. Pictured is Diamine China Blue, but I also like Iroshizuku Tsuki-yo.
I think one reason I may be doing this lately is that I keep way too many pens inked at one time, and this is one easy way to remember what inks I have in these pens. I'm not sure.
Oddly, on other pens, the color does not seem to call for any particular ink. Nothing seems unusual flowing from a Lamy 2000. Even other all blue pens, like my blue Safari and blue Waterman Expert, feel comfortable with any color ink. So, what is it about these three?
What about you? Do you find yourself color-matching any of your pens and inks? Or perhaps consistently mis-matching them?
