pub type Color = u8;Expand description
A number corresponding to a color.
Each color the Ppu can output corresponds to a 6-bit Color value.
The low 4 bits specify the hue, and the high 2 bits specify the brightness.
Color values are only valid in the range 0x00-0x3F. Any value outside that range will
be truncated to fit when writing to Ppu color palette memory.
Warning: using color value 13/0x0d on actual Nintendo hardware generates
invalid NTSC signals that can cause televisions to display the frame incorrectly.
Avoid using color value 13, though it is still allowed for authenticity.
Here is an example palette demonstrating what color each number should correspond to
(numbers given in hex):
Note that different TVs display NES output differently, so this palette is not exact. This image is just a rough example.