Boolean functions and their twins can have different weights, and thus different weight parities.
Warm colors represent those where they are equal, cold colors those where they are different.

The integers in these files represent truth tables.
One could make separate files for Zhegalkin indices, but they would just have blue and green exchanged.

The patterns of these matrices are like the transposes of (normal) quadrants of Zhegalkin indices. (See upper example on the right.)
But the colors are changed by the circular shift from yellow to blue to green to yellow.

The pattern is also similar to that of the patron quadrants. (See lower example on the right.)
The warm pattern here (red, yellow) is the same as the dark pattern there (red, blue).