Color.Manipulate.fadeOut on 'white' results in NaN

[semarco]

No description provided.

[eskimoblood]

Not sure how to reproduce this. I added this to my test suite and it pass:

  \() -> (Expect.equal (fadeOut 10 (hsla 1 1 1 1)) (hsla 1 1 1 0))

[dstreet26]

Red and Black work fine but White does not:

> Color.Manipulate.darken 0.25 Color.red
HSLA 0 1 0.15000000000000002 1 : Color.Color
> Color.Manipulate.darken 0.25 Color.black
HSLA NaN 0 0 1 : Color.Color
> Color.Manipulate.darken 0.25 Color.white
HSLA NaN NaN 0.75 1 : Color.Color

[eskimoblood]

Ok, seems like Elm cant convert white into HSL correctly:

toHsl Color.white
{ hue = NaN, saturation = NaN, lightness = 1, alpha = 1 }

Have a look here: https://github.com/elm-lang/core/issues/895

Unfortunately I have no time the next days working on it, maybe next week. You can add a pull request if you need it faster. It just needs a save version of toHsl that converts all NaNs to 0