I wasn't meaning to offend you or your personal preferences. I understand that the KH 150 can be perceived as being brighter than the KH 120 in direct comparison in specific listening conditions. It's the other member who is known for regularly invoking the dubious claim that Neumanns are inherently "dark", after having only briefly listened to them (while not stating under which conditions did they come to such conclusion).
As for my personal experience, I am using the KH 120 daily for a year and a half now, and at first the treble even felt a bit too harsh for me (after having used the HEDD Type 07 MK2), but it looks like I got used to it. What is true, is that these speakers benefit from EQ that helps to get rid of some low-mid messiness due to desktop reflections. Then you can hear what they are really capable of. So perhaps this perceived "darkness" has more to do with suboptimal listening conditions rather than the tonality of the speakers themselves (as backed by their free-field measurements).
It is not that you are wrong in the sense that you are absolutely entitled to your preferences. However, it is important for all of us to understand the difference between objective reality and personal perception/preference. The point is that the un-brightness is not in the KH monitors --- It is in your perception and preferences.
All good - not offended and totally get your guys' stance on it and I'm in agreement