Screen capture of the color balance transform. In the dialog, click on the "remove midtone" box. Then, using the eyedropper, select a region on the lower part of the right hand column (in the shadow), because (I decided) the column is supposed to be white. From the angle of the sun, I decided it was near sunset, so I clicked on the "add midtone" box, and moved the circle in the center of the color wheel towards yellow. I fiddled around until I liked what the preview window showed (in terms of color balance, that is). I even move the control ponts on the graph around to see if I can improve things to my liking. Experiment. You can see the final settings in the image here.