This video shows the method to split tone in Lightroom. Firstly, go to the 'Grayscale' button to change the photo into black & white. Go to the split toning section and change the tint into the color you want using the 'hue' option. You can also use the 'Highlights' option to select the color and see the preview. Bring the saturation down to get the right color. Repeat the same procedure with the shadows. Choose the right tint for shadows. Hold the 'Alt' key down to see the effect of change in hue when saturation is zero. See the older image by clicking on the left hand side of 'Split Toning' tab. You can also view it in the 'History' option on the left side. This completes the task.