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: 0.36005069996409667
    b: 1.007540504999131
    c: -0.41260522068334726
    d: 0.24440329779267556