Learn how to design an apple desktop theme in this tutorial.
Begin by representing a new file having
1280x854 px and
72 dpi. Select then the
Paint Bucket Tool (G) and paint the file out in here shown color: #
C3823E
Select next option for this layer:
Filter>Noise>Add Noise 
One more filter should be applied on this layer:
Filter>Blur>Motion Blur
Next select another filter’s option:
Filter>Render>Lighting Effect
