For permanancy of color, spray afterwards with an
ultraviolet/waterproofing spray can. It doesnt take care of
everything forever, but certainly helps alot. I have tshirts with
transfers done on my inkjet that have lasted 3-5 yrs, with moderate
to heavy use, with UV spray- bought at any art and craft supply
store. I would experiment 1st tho, cause sometimes the spray will
make the decal paper pucker up.
Ed in Kokomo