Color Your Cloudy Sky
Now it's time to set the color of the fake sky and clouds. Double-click the Set Foreground Color square in the color palette. This will be the cloud color. You can make your clouds any color you like; for this photo, I think a bright gray will look most realistic. Enter 240 in each of the R, G, and B fields, and click OK
. To set the sky color, double-click the Set Background Color square and enter R, G, and B values for a good shade of blue (try 110, 186, and 225, for example).