Myriophyllum Aquaticum abnormal emersed coloration?

[HardeeParty]

So I collected this very typical wild myriophyllum aquaticum and tossed some of the longer stems in my tank that were never fully submersed. Surprisingly, the emersed tops are turning a bright orange/red coloration similar what you would see in tuberculatum submersed growth.

Any thoughts? Week Aqua M450 at 75% power, co2, etc; typical medium tech setup.

Wild:


Freshly dropped in tank:


Today: