I haven't broken my inks down into color categories yet, but I plan to in the future when I add full reviews. Here's how I'll sort them:
This category is designed to help you if you're looking for an ink in a general range of colors.
This is pretty much a reflection of the selection most manufacturers carry, plus a couple of speciality inks which don't fit in elsewhere. Hopeful, my color perception is close enough to yours that these categories will be useful:
8. Light Blue
9. Blue-Green or Teal
Shaded Inks like red-black, or green-black will be under the red and green categories respectively. Tinted colors like Peach or Lavender will be under orange and purple. If I were consistent, Pink would be in with the reds and blue-black would be in the blue section. Oh well.
Until recently there was no such thing as fountain pen safe white ink. However, Noodler's Inks has done it again with their "Whiteness of the Whale" Ink. I immediately bought a bottle, since this may be a one time production for all I know, but have yet to use it. One of these days I hope to get around to reviewing it.
A really brilliant discussion of ink mixing, which tempts me to change my color definitions all together, can be found on FPN here: http://www.fountainpennetwork.com/forum/index.php?showtopic=40629&hl= Great job Limner!
FYI: I'm leaving up my old color category system below, in case someone finds it useful. It's much more comprehensive, but I'm not sure I can really tell the difference between some of the more similar categories.
In my effort to devise the ultimate ink review, I've stolen pretty liberally. This category started out as "Fountain Pen Network color category." I stole it from Jon Rosen's excellent Fountain Pen Database (available for free download on FPN.) Jon Lists thirty different options, which I've toyed around with until I modified it to the color groups below.
2. Blue-Black, mostly black
3. Blue-Black, mostly dark blue or dark blue-green
4. Blue-Black, mostly gray
5. Black with other colors
9. Dark Red
12. Light Green
14. Dark Green
15. Light Blue-Green
16. Dark Blue-Green
17. Very, very light Blue
19. Very, very dark Blue
26. Light Brown
28. Dark Brown
30. Invisible except by ultraviolet light
Inks, Pens, and Paper dissected here for your surfing pleasure. I'll be adding my PC to Apple Odyssey too, in the hopes of helping others out of the pit of Newb.