<VV> Paint for 64 Finned Drums?

[D. Barry Ellison]

Seems like any paint would deter the cooling properties of finned drums.  
Does it really matter?  I just dislike rusty drums.

When I've painted them in the past it always comes off with the rim.  I 
guess I can tape that part prior to paint, or wire brush before install.

What says the collective group?

Barry E
Corsa SC
2 lates, 2 earlies, straddling the EM vs LM debate