It's good to see that I'm not the only one who has painted that mini in CMON. It's a fantastic sculpt and you did it justice with the paintjob. I like how your paintjob is the oposite of what I did (I went for a bright and cartoony look).
The use of a more realistic palete on your model worked out very well. What I love most is painting the liquid driping from the end of the tool green. Very original and allien/orky looking!