Plasti-Dip Hood Vents

[Naz24]

So.... My friend has been plastidipping random parts on his 3-series these past few days. i'm now encouraged...

My top hood vents are fading, and look like crap!. I'm trying to figure out the correct way to tape these babies off to plasti dip them. Anyone who knows the vents, knows that they are pretty complicated, and there are slats not only on the top, but beneath the silver area (4.4 model)....

What would be the best approach? should i try and tape between each slat? or just put newspaper behind the slats and spray everything?

I'm considering doing gunmetal on the grill and vents... think it would be unique and look pretty cool