Create a vibrant birthday theme background featuring a colorful balloon arch in shades of pink, blue, and yellow, with confetti scattered across the scene. Add a whimsical cake in the center adorned with candles, surrounded by presents wrapped in shiny paper. Include a sunny sky with fluffy white clouds and a rainbow arcing across the top, while subtle streamers hang from the corners, giving a festive, cheerful atmosphere perfect for celebrating a birthday.

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Create a vibrant birthday theme background featuring a colorful balloon arch in shades of pink, blue, and yellow, with confetti scattered across the scene. Add a whimsical cake in the center adorned with candles, surrounded by presents wrapped in shiny paper. Include a sunny sky with fluffy white clouds and a rainbow arcing across the top, while subtle streamers hang from the corners, giving a festive, cheerful atmosphere perfect for celebrating a birthday.