I like the light blue. It's true that it's complimentary, its like the sky blue to this forums earth brown. In any case, because its a light, soft color, it really doesn't "hurt" the eyes and as such, isn't really an "eye-sore". I don't like the yellow, I feel its more jarring than the blue.

Failing the blue, I like the rich gold tone of Arcana's name.

All IMHO, of course.