Special Effects - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 211

Figure 4.4
5. Go to Filter > Camera Raw, increase Temperature to +100 and Vibrance to +100,
and click OK.
6. Click the triangular icon to the right of the night and light layers ( Figure 4.5 ) to
hide the layer masks that are attached to the Smart Filter, and to prevent the layer
stack from becoming too long.