Can't see any use of giving you the names of nice shading inks when you are using an XF.
With XF you need the neon, vivid monotone inks. Shading is much harder to see.
There are a number of inks that shade well with a regular flex F or M. Sometimes better than with more flexible nibs that are wetter due to their flex.
You need a big Fat F (M's work too.) for green-greens that shade, R&K Verdura, a nose in front of MB Irish, a neck in front of Pelikan 4001 Green.
DA's Moss Green is a nice spring moss shading ink, light and lively. I immagine in XF not vivid enough. Pretty nice in F though. OP didn't want lighter inks.
MB Winter Forest is worth the €30 a small bottle now costs. A limited ink from 2008&9. Not an every day ink at that price.
For Dark Green.
Pelikan Aventurine, did only average in my 9 green ink test. On a number of papers it feathers. On the right paper a very nice shading ink....again in an F.
Diamond Medow Green is the worst green I've ever used by far....fleathers, is murky dark...on good Gmund papers. 110, 120 &170g.
Edited by Bo Bo Olson, 29 October 2013 - 10:41.
German vintage '50-70 semi-flex stubs and those in oblique give the real thing in On Demand line variation. Modern Oblique is a waste of money for a shadow of line variation. Being too lazy to Hunt for affordable vintage oblique pens, lets you 'hunt' for line variation instead of having it.
www.nibs.com/blog/nibster-writes/nibs-germany & https://www.peter-bo...cts/nib-systems,
The cheapest lessons are from those who learned expensive lessons. Ignorance is best for learning expensive lessons.