Question
is there a colius called mariposa

Answer
John,
Yes, there is a coleus called "Mariposa" - it is a tall variety with purple new growth and older foliage that turns a lighter bright pink.  This coleus was introduced by Singing Springs Nursery, I believe, and unfortunately they are no longer selling plants, but you might be able to find it at other mail order nurseries such as Avant Gardens in Massachusttts.

all the best,
C.L.