"Русская голубая":

Although I really doubt there are only tomcats in this breed :)

I think that's among the lines of "no blue cats" rather than "there are no blue cats here".

This is accepted

I believe you can use какая and такая to mean 'what' and 'such' in the case of 'what a beautiful cat', or 'such a beautiful cat'. So perhaps какая красивая кошка

I think that's 'there are no blue cats there'.