<!-- blur (expands) then sepia (shouldn't clamp) -->
<img style="-webkit-filter: blur(2px) sepia()" src="resources/reference.png">
<!-- blur (expands) then another blur (shouldn't clamp) -->
<img style="-webkit-filter: blur(3px) blur(3px)" src="resources/reference.png">
<!-- blur (expands) then grayscale then another blur (shouldn't clamp) -->
<img style="-webkit-filter: blur(3px) grayscale() blur(3px)" src="resources/reference.png">