Create a festive image representing a 30th birthday celebration. The visual should feature an abstract backdrop boasting bright and playful colors with varied patterns resembling a tapestry. Shape silhouettes of two cats into this vibrant part of the image, one showcasing the characteristics of a black and white cat, and the other resembling a dark tabby cat bridging an urban aesthetic. Intertwine elements referencing the architectural and cultural uniqueness of a metropolis similar to New York City. Incorporate floating balloons and confetti near a prominently displayed number '30', hinting at the occasion. This visual representation should be a tribute to a deep bond between a lady and her cats, along with a profound connection to a city of skyscrapers.

Generated with these themes: Black & white cat , Dark tabby cat, New York, 30th birthday , and Niece.

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