How can I differentiate two colors depending on its brightness?
for example:
The green pedestrian indicator vs the restaurant's signings.

Can this also be differentiate?
The red pedestrian indicator vs the backlight of a car?

| 1 | initial version |
How can I differentiate two colors depending on its brightness?
for example:
The green pedestrian indicator vs the restaurant's signings.

Can this also be differentiate?
The red pedestrian indicator vs the backlight of a car?
