you may wish to remind your friend that the Catholic Church has NO official “depiction” of Jesus Christ other than what detail is given in the gospels. Icons, paintings, and other depictions by artists are not “official church teaching” although many artists through history have had great knowledge and appreciation of that teaching and attempted to portray it in their art. Art is a very individual thing and the artist portrays his own vision. Artists through history have depicted Jesus in ways that identify him with their own culture or in what they feel to be a more universal way. your friend has a bone to pick with Western art, so he should leave the Catholic Church out of it.
you will get some more info if you do a search on this topic because we had this discussion recently. If your friend has actually visited the middle East he will have noticed a wide range of skin tones, mix of facial features, hair and eye color. Also this is the wrong forum. Apologetics is for discussion of doctrinal topics. try popular media or spirituality.