Thanks for the tip larwick!
Thought the end result look'd good to, but I'll add yellow :-).
That really helped, i think it looks better.

But... Do think he looks a bit euhm... Cheesy, maybe I've got the yellow colors wrong.
Still thought something was wrong, after taking a piek at
Grunt revised from Indigo. I knew what I've done wrong. I needed a darker shade, just like Larwick said to... Tried out to make it a bit purple-ish, and that came out pretty good, iff i may say so:

Think I've now just overdone it, need some help:

Here's a lineart from me, drawed it, scanned it in, cleaned it up, and this is the result:
