Volumetric Fog

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have it zoom in and out once in a while Periodic bursts

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Make This Whole Thing Patriotic (American) Eagle silhouette

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have it zoom in and out once in a while Random Intervals

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use black and gray colors Gradient variations

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Serene Calmness

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Melancholic Waves

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have it zoom in and out once in a while Zoom Timing

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