I usually find myself studying screenshots from Coco. I just noticed that Hector and Coco have the same markings on their skulls (in different colors).
I like to think that this detail represents how similar is Coco’s personality to Hector’s personality. Hector is humorous, mischievous, warm hearted, a hopeless romantic and so full of life (ironic ha-ha).
On the other hand Imelda is stubborn, fierce, passionate and more uptight than her husband (when it comes to expressing her feelings -except when she’s angry. She really knows how to express her dissatisfaction-)
Coco is stubborn like her mother (-I’ll try analysing Coco’s personality explicitly on another post) but I think that she resembles more her father.