The chapter where Natsume told the colour of the kimono which indicates one's spiritual power, like this one?: http://www.mangago.zone/read-manga/natsume_yuujinchou/mh/v17/c070.1/13/
I don't think it has come up in the anime yet either... But if we all remember this happening but can't find it... O.o
Yeah! I remember reading something like that too! About natsumi seeing gold with butterfly pattern? I think
The chapter where Natsume told the colour of the kimono which indicates one's spiritual power, like this one?: http://www.mangago.zone/read-manga/natsume_yuujinchou/mh/v17/c070.1/13/