I must admit I intentionally used the black outlines purely for effect; but you're all right, using appropriately coloured outlining would produce more detail. I'll give it a try on a few of them and post the results! It would certainly enable me to more accurately show how little hair Berlusconi has
On the subject of poses I wanted to keep all my tinypixels characters in an identical pose (I'll be doing lots more), achieving anything other than this pose is tricky anyway with so few pixels to play with. However I admit you're right, If I were able to more accurately replicate their stances it would make them more recognisable.