What do you think what I've done to this picture?
I've tried to use Curves but I don't seem to get the hang of it. Never any satisfying result.
Then I used
1)Selective Color layer, and lowered (in this case) Cyan way down.
2)And a Level layer to set the white.
I've done 3 pictures , each with a different colorcast. Used the above method each time.

Second image adjustment :

I think the color balance looks good. I'd try increasing the saturation a bit to see how that looks.

Bart