Questions about colour correctness, colour similarities and how to best use certain colours.

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What's the exact opacity and translucency of transparent bricks?

As answered in this question, transparent bricks are made of PC (polycarbonate) and as listed in this answer and on Brickipedia there are fourteen transparent colors: 40 Transparent (clear) 41 ...
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Align with a Line using Color Sensor

How can I align on a line using a NXT Color Sensor and a EV3 color sensor? When I programmed it, the EV3 color sensor detects black first! Please help!