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: 0.5361326344380482
    b: -3.0615351823886905
    c: -2.9087551741309223
    d: -2.7926442201527117