1. Make a new RGB image. The new RGB image in the example is 260 x 260 pixels. Click on Filter > Render > 3D Transform. 2. To start making cubes, click on the Cube Tool. Make a cube depending on the size of your image. 3. Once done, click on OK. By now you should have something like the example on the left. 4. Now for the coloring part. Select Image > Adjust > Hue and Saturation. Make sure the colorize box is checked. By the drag of the 'gliders' choose the color you want. 5. Customize it if you wish and enjoy. Colour adjustments and shadows go a far way :)