chromium/third_party/blink/web_tests/css3/filters/effect-saturate.html

<img style="filter: saturate(0)" src="resources/reference.png">
<img style="filter: saturate(0.5)" src="resources/reference.png">
<img style="filter: saturate(1.0)" src="resources/reference.png">
<img style="filter: saturate(2)" src="resources/reference.png">
<img style="filter: saturate(5)" src="resources/reference.png">
<img style="filter: saturate(10)" src="resources/reference.png">