click: refresh
a: move mouse left/right
b: shift + move mouse left/right
c: ctrl + move mouse left/right
d: alt + move mouse left/right
color = rgba(a, b, c, d) with mapped domain
a: 2.2615846002582245
b: -2.420612773922609
c: 0.7470976081839393
d: -1.7917414589192844