*l* did I say 7?  Sorry, it's all the art in me.  
Technically the colors of the rainbow are red 
orange yellow green blue indigo violet, but who 
the hell ever cares about indigo?  It's just half 
way between blue and purple.  So yeah, six is the 
way to go.  One per color.

And no, these cels can be from ANYWHERE, and I 
really suggest you find cels from non members 
pages because that would increase the likelihood 
that you don't pick the same image as someon else.

^_^ Thanks for asking