I gave in to temptation and purchased the Perfect 
Grade Wing Zero Custom kit for $140 (considering 
US shops are preordering at $225, it's not that 
bad).  So far, I have one Wing Zero Custom cel 
that I could use as a painting guide.  I wish I 
could find more, though.

Now I'm tempted to bring my cel into an art shop 
to get perfectly matched paint, heh.  Later.