Besides being cheap, these have the advantage that previous research has shown that a male's level of flashiness in the eyes of a female can be manipulated by putting coloured rings on his legs.
Ms. Hayek gives a showstopper of a performance in a shrewdly conceived role, not because her Elena is given to flashiness but because she's quick-witted, scarily focused, improbably droll and the biggest surprise of all capable of genuine human feeling.