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: 3.0722001509181682
    b: -2.180317194197585
    c: 2.2592451244438907
    d: 2.370213867355358