Why why why do so many dye-jobs fall short of eyebrows?

Actually – this time, I’m straight-up curious.

OK – when I DO see a – you know – ‘obvious’ ‘job’… my little society critic is going ‘ho HO – there’s a perceived transgression of logic’… he’s hard to restrain.

But. I actually don’t have strong – any, really – logical convictions on the issue. It ‘feels’ wrong but I can’t argue empirically against it, that’s all.

To me, though, the question remains; if the intention is to appear, say, naturally blonde (PMS: ‘Naturally’), then why tarnish the lead character’s performance with a couple of poorly briefed extras?