That is a really good looking err thing. 
I'm curious about the paint scheme. Is it easier or harder choosing colors without knowing what this is?
My default system for painting unusual things (i.e. not things like Napoleonic Uniforms)
is to just take a colour/some colours out & play with them.

This does several things:-
It uses up those colours that still have fat tubes of paint,
Lets me experiment with different effects/colour mixes, &
as I hate wasting those last bits of paint on the palette.
I get some interesting washes as I thin it down.
Having said all that, my original idea was for...something that would
fit in the Star Wars Universe. It will therefore probably be white.
