Zabu,
I am going to go WAY out on a limb here and state something that I have been thinking for quite a while now....
The "conventional wisdom" (sometimes an oxymoron) is that the soft edged merging between colors often seen on German aircraft is due to the paint being softly merged with a spray gun application. Having looked at a lot of photos, I am not so sure this is true. In fact many photos appear as if the soft edge was applied by BRUSH using some sort of a blending technique. This would indicate that the paint was applied with a brush and not sprayed on.
This is just my personal opinion and I am willing to have somebody prove me wrong on this. However, the more I look at pics the less convinced I am that these soft edges are sprayed on.
There. That ought to raise some hackles!!