Spacers on a Nismo
in short:
no, bolt on spacers (type 2) will not work on the front. but will work on the back.
you probably want 15mm front spacers, you want them to be hub centric. an you will need extended studs
the studs can't be extend too much, (15mm = the the spacer width would be best)
you can't use super long studs because the washer style lug nuts from Nissan are closed ended (though you could grind off the end if you really wanted super long studs)
in the rear 20mm bolt on will be fine. the garageline don't look any different than any other spacer i've seen.
i would suggest the
easy route
if you really need it to be black. mask off the faces and paint the edges. You won't be able to tell the difference.
But H&R sells 15mm DRS spacers as well that come black if you are set on it.