Probably thinking of JerseyShore whorange/ spray tan...
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It's filming in Toronto, the CW's are in Vancouver. That's much further than Supergirl's LA.
Well, half of CW, the other half being CBS, which is what Supergirl was originally on.Plus Warner Bros owns the cw. So unlike when Supergirl was on NBC there's nothing holding them back from including titans or any deals that need to be worked out.
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The initial picture was quite different, so probably just that.