I think they are interesting. I have a few questions about them, since I am thinking about them from a FFG Star Wars Narrative Dice mode.
Are all of the die the same, or are each of the colors tuned to different odds or represent differing difficulties, which would be interesting and give a bit more flexibility and breadth to the game you are working on? Like the green die being simple and non-dangerous tasks, blue die would be moderate difficulty tasks or with some danger, red die being difficult and potentially lethal tasks?
It would seem that body should occur more than any of the extremties just purely out of surface area available. Is that reflected or is what you show there what you get?
Just some thoughts. Good luck!