alt Hacker NewsI concur in your liking of Breeze. It's an amazing teme, really. My only objection is that the default light color scheme is too light. Fortunately there are good color schemes such as Steel or StormClouds that solve that problem, a light theme that isn't too "white".
StormClouds: https://store.kde.org/p/1001459
Steel (no longer shipped by default, but still available at the KDE Store): https://store.kde.org/p/1311274
As for the monitors, I have them because sometimes I have issues with CPU speed (due to a hardware quirk of my laptop) and the network connection is kinda iffy at the time.
I tried both of them out. They are not for me, ATM. Maybe the too light for you results from different hardware. I have screens where I can adjust brightness and contrast separately, running at a color temperature of 5000K (warm).
That's different from what most laptops do, or fiddling with xgamma, or one of its frontends, using 'redshift', etc.
Even at brightest sunshine I don't go over 55% brightness, otherwise during the day, between 38% to 44%, at night just 20%, with contrast always two below these settings, or any I may use in between.
Despite all this, pictures look just right, even if I visit sites for calibration.