1 <img style="-webkit-filter: hue-rotate(0deg)" src="resources/reference.png">
2 <img style="-webkit-filter: hue-rotate(45deg)" src="resources/reference.png">
3 <img style="-webkit-filter: hue-rotate(90deg)" src="resources/reference.png">
4 <img style="-webkit-filter: hue-rotate(180deg)" src="resources/reference.png">
5 <img style="-webkit-filter: hue-rotate(270deg)" src="resources/reference.png">
6 <img style="-webkit-filter: hue-rotate(360deg)" src="resources/reference.png">