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: 2.6010961879630123
b: -2.207252560741382
c: -2.0203906032179395
d: -0.8820237162034998