Cape coloring page is a very simple drawing for those who want to color fabric or clothing items. Of course, such clothes are often associated with comic book superheroes or antique characters. For example, Thor prefers a bright red cape paired with Viking armor.
What color would be perfect for this cape? It depends on your idea. A dark blue or black cape is associated with Batman or classic comic book villains. If you want more realism, avoid overly bright colors. Dark red or dark blue is a great choice in this case. You can also add some folds or shadows.