have the color pallete change over time Hue rotation
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Gradient Overlay
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have it zoom in and out once in a while Add Scaling
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Sand dunes
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move at 1/5 of the speed Variable speed
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Fractal Forest
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the sky when christ is coming Heavenly Beams
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have it zoom in and out once in a while Acceleration/Deceleration
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click to explore, then edit