[Feature] When the mouse moves，How to change the color of the area on both sides

### What problem does this feature solve?

I hope that when the mouse moves, the left side maintains its original color, and the area on the right side is white in color，what should i do
The color change of the area follows the movement of the mouse

### What does the proposed API look like?

[https://echarts.apache.org/examples/zh/editor.html?c=area-basic&code=PYBwLglsB2AEC8sDeAoWsAeBBDEDOAXMmurGAJ4gCmRA5AMYCGYVA5sAE7m0A0J6AI2ABXaABNGXAOKMQRAGaMANnip9SsCWEZEA2rQCyMXrFoAVYVRO0A6lTHWzAC2HWAYhwjWAysx-jaAF0SAF91WHIcfCJUDQpqOgA3ZUtaUPCwYGAlSDliOM9WVioOOkZcPF5-MkLijgB5aDp6JQh6AGsAHwBbEVVexKtw9DwnYAB3AGEYFmgwBWVVYdhy_AAFYAg5kpjq9HiaU3oOYDxK5ZHoWSIwDksL2FboKm8KJUPYjVJ6bM46DlYAkYAAoABwANh4EKhkIADAA6ACssIAlFUvqQDnQJKN7GkMSFqoT0GESKpPFRCLBdNVPhotDpqaCAEywniwACcAGZmeyObCAIx8rkAFnZAuZ_PFXK5bNgAp5sMCDyxpieQz2sDw5G6QiUzQgHBaGox2t12W8EAAXocxZrRhNvDq9QsVGpNZIqIxXuR3rsMehOBBWFs6HhtBwwCYAPTRwBzcoAFdUA4BaAF3jAKl6gAuEwAB-oAoOUAMP-ADbzACXRgHozRjCTKa9A_JR_fIB_aUQ60dWSdENzBENlV0jkLsPDQYZn9nvocjD-UD76_DivUBUmkd0h0pewYDyeSqeawbur6e10qmAFA4HMxFc8Vn9lcxHshECxFo2CxncAUlggBBNQAhboAcjMATkFThopJ7iuS7rpuVDbkKo5fDWda0MeIJnhe8pXrAN53k-L4CrCsLvt-_4wSSMHKjBrC1kC-qwIobrPtGsCAFz-gCA7oAXHLUYsVA9sSXzAV86o-n69YYnBh60AAxG4AAiADsknMly-I8USJDBCEADcQA](url)