i am a very firm believer that Emmrich's eyes turn a bit extra fade green in moments of high emotion. he does not believe this happens, no matter who mentions it. "Preposterous, mages eyes cannot just turn color on a whim." johanna almost had him convinced, but was sent away from the necropolis before he fully believed her.
im also rolling with the assumption that this is not common for mages in thedas, but myrna did say our professor is a powerful pyschagogue, so i would think its possible for extremely powerful mages, even if it's rare
notable moments of this include:
when he graduated with his necromancy PhD (or whatever the proper term is) and was still up partying with other watchers at 4 am, absolutely drunk off their heads
very shortly after manfred's body was assembled, and he was getting into absolutely everything emmrich owned for an entire day. emmrich was trying so hard not to be flustered but he keeps putting things back in the wrong place and he has a system and its completely off now, and what was he thinking bringing a wisp into his home like this????
myrna swears she saw it once when she was keeping him company on the anniversary of his parents death. emmrich denies this, although he was very thankful for the company of a good friend on a sad day
rook thinks they saw something green flash near emmrich's eyes when he was showing them the fade in the upper floors of the laboratory. but there were so many green fade bits slying around they cant be 100% sure
the first time he saw rook naked. they asked him about it after (very vaguely) and he said there has been some records of it but hes never seen it personally. rook spends the next 10 minutes trying to convince him, he does not believe them.
when rook tells him they love him
when rook gets trapped in the fade jail, they stay green for longer than they ever have. the entire team notices, but doesnt say anything. he sees them in a mirror, and tears up again thinking he was an idiot for not believing rook or myrna or anyone else about this
when they rescue rook from fade jail
they stay green the entire time during sarcophagus sex. it's the brightest rook has ever seen them
after the gods are defeated, and he collapses into bed with rook after the longest day of his life, and the fighting is finally over, and rook is still here with him. they are green until he falls asleep holding rook