Excessive chroma blooming on Hummingbird monitors in bright lighting conditions

Gear

ZephyrCan I fly my Alexa or RED on a Zephyr?389

Master SeriesIs a used Master Series rig worth buying as a first big rig?191

BFDHow do I power my BFD receiver from my camera or sled?186

VoltCan I retrofit a Volt onto my existing sled or gimbal?168

ArtemisHow do I power my camera and accessories from an Artemis sled?166

MDRWhere can I mount my Preston MDR on my rig?143

ModulusIs there a Modulus option for HD wireless video?141

G-70Will my G-70 fit my vest, gimbal or sled?126

FI+ZCan I control iris and zoom wirelessly, not just focus?60

HU3Where can I get my HU3 repaired, refurbished or repainted?60

CineLiveHow do I pack and case my CineLive rig for transport?54

G-70XHow does the G-70X compare to Pro Titan, Xarm and other arms?46

Trinity 2Is Trinity 2 SUP 3.0 firmware safe to install or buggy?46

Ultra VestWhich vest should I choose for my body size, comfort and operator type?39

2007Monitors forum

19 years old. Gear and prices may have changed since.

DisputedParticipants disagreed and reached no conclusion. Read the findings as positions, not as an answer.

The MK-V Hummingbird monitor lacks dedicated chroma or hue adjustment controls, unlike many other color monitors.
Chroma blooming problems observed on a Hummingbird monitor improved significantly when a Programmable Digital Level device was removed from the signal chain.
The Hummingbird monitor provides brightness, contrast, and black level adjustments but no color intensity control.
The BlackBird variant, which is distributed by the manufacturer with a Limo connector and frameline generator added, reportedly works without chroma issues when paired with certain external devices.
Some production units of the MK-V Hummingbird had brightness and contrast controls accidentally swapped during manufacturing.

The reported improvement after removing the external level device was attributed to speculation that it was designed primarily for green-screen applications rather than for proper chroma signal handling, but this was never confirmed.
No resolution was achieved for users seeking a way to reduce chroma on the MK-V version through on-device controls.
The discussion did not establish whether the original Hummingbird model possessed chroma controls that were removed in later versions.
No online manuals or schematics for the Hummingbird were located during this discussion.