Original, untouched photo.

Here is the same photo, but with the split tone colors added to it in Camera Raw. To do this, I first converted the entire image to B&W. I then would change the Highlight hue to a light yellow color to make everything that is highlighted or lightly colored into the yellow color that you see. To make the shadows the dark blue-ish purple color, I changed the Shadows hue color to that particular hue. Afterwards, I changed the saturation of each hue, making sure that each would be well visible in the photo and stand out against each other.