1.   A fluid level, shows the presence of a gas bubble which appears black.

2.   Red capitula held against the sky appear black to the colour-blind bats, while yellow ones are those displayed against the foliage.

3.   At night, the white colors glow and the other colors in the carpet appear black.

4.   At the rink, the puck will appear black.

5.   Dry air appears black.

6.   Fat and skin are less dense and show up as shades of gray, while a liquid like cerebrospinal fluid appears black.

7.   Other symptoms include persistent vomiting and a bowel movement that appears black.

8.   Other symptoms include persistent vomiting and a bowel movement that contains blood or appears black.

9.   The mud-puddle brown hues of real coffee appear black on film.

10.   Fibrous tissue looks white, while fat appears black.