Answer 1

https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/hue-rotate

https://webref.ru/css/value/hue-rotate

Answer 2

filter: hue-rotate(Xdeg);
filter: hue-rotate(Nturn);

With hue rotation you can push a color filtering by X deg or N turn on the color wheel.

360deg/0deg (1/0turn) will perform a complete rotation, which will mean no change at all.

The value of this property can be negative, for example -90deg (-0.25turn) would be equivalent to 270deg (0.75 turn).

https://code.sololearn.com/Wmo6gEySXAAA/?ref=app
https://code.sololearn.com/WXOgmVtj7v26/?ref=app