Improve readability of card context
Improve readability of card context

For composite, get rid of the light blue type on a white background;
make it dark blue instead for the thumb cards. For all cards, use roman
type instead of italic.

[endlessm/eos-sdk#3933]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib