Digital BW, The Print

Hi,
I know you said these sepia toned prints exhibited no metamerism, did you 
bring them outdoors? I am looking for an archival inkset to make prints 
(sepia toned) which will be sold outdoors at art and craft fairs, but which 
will hang indoors, of course. Epson's 5500 made gorgeous sepia prints which 
turned puke green outdoors.
Thank you
George J Kunze