Weird comparator behaviour.

[KuznetsovRoman]

Example 1

Image1

Image2

With threshold: 0.15 (default is 0.1) Pixelmatch can't see the difference between these images

Example 2

Image3

Image4

With the same threshold: 0.15 (default is 0.1) Pixelmatch can see the difference between these images:

Showcase repo: https://github.com/KuznetsovRoman/pixelmatch-showcase

And there is no suitable threshold value. Here is visual color comparison table:

[DudaGod]

cc @mourner