GrayScale examples
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Admire the different shades of Brigitte Bardot:
1. Gray = (77 * Red + 150 * Green + 28 * Blue) / 255
2. Gray = (77 * Red + 152 * Green + 28 * Blue) / 256
3. Gray = (222 * Red + 707 * Green + 71 * Blue) / 1000
4. Gray = Red
5. Gray = Green (surprisingly good!)
6. Gray = Blue
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