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: 0.40532979018325577
    b: 2.674095688966717
    c: 0.5588228470081891
    d: 2.8298256919696874