Thanks for the feedback!
I usually go for more conservative color combinations, but I thought this would be a good opportunity to experiment with something a bit different. I've never tried a triadic color scheme before, and in retrospect I should probably have made more use of orange, but I'm still pleased with the way it turned out.
Regarding the base difficulty of 5, note that players usually roll 2 dice and keep the highest, giving them a 55.56% chance of success -- or a 75% chance of success if they consider the task important enough to spend karma on (this decision in made retroactively, so you never need to "waste" karma in situations where it has no impact).
You only roll 1 die for actions that fall completely outside the scope of your calling, and even then you'd still have the option of using karma. This represents the equivalent of unskilled rolls in more traditional RPGs.