It could prove handy if we'd be able to extract some additional information from the .Account, like the .Name and / or .Address.
Then, for example, to colour our own emails, we would use something like:
{{if match (index (.From | emails) 0) .Account.From.Address -}} {{...}}
(Which – probably, combined with msglist_answered – could be of some use in an intense mailing list, for instance :)
~skejg hopefully this is what you were looking for: https://lists.sr.ht/~rjarry/aerc-devel/patches/53626
Bence Ferdinandy referenced this ticket in commit 1d4eafb.