Historically EG antifreeze has always been green or blue Ellie so i wouldn't worry on the colour in this case.
I wouldn't trust the hybridised stuff either, refilling with OAT after having EG in a car without a seriously intensive flush can cause the silicates left in a deep dark corner to precipitate out (interaction with the acid) into silicone gel, not what you want in your cooling system!
With that in mind, if the two types are hybridised, arguably speaking it would only take the addition (even accidental) of some catalyst to cause a similar reaction but just like Calcium batteries, they don't tell us these things and insist it's all backwards compatible like the new gearbox oil Volvo supply for the M90 that turns out to give problems.