>>54133174>>54133218It gradients to blue at the tips, but that's an accent, and will be offscreen mostly, so it's certainly not to be taken as the main color.
The pixels of the top main part of her hair are also kind of blue in that shot, but the context is "everything is kind of blue so the viewer can see but knows the setting is dark".
Later, when the context is "a spotlight is shining straight on her hair", blue is still the highest of RGB in her upper hair, but it's more of a cool silver grey than actually blue. You wouldn't say Zeta is blue.
