Information about this Trick: This technique can be used in Photoshop 4
Start a new file. File | new... Choose a suitable size and make sure you are in RGB mode. Start a new layer and draw a rectangle, use black color. Duplicate the layer. Layer | Duplicate Layer... (or right-click on the layer and Duplicate Layer) Make Layer 1 active by clicking on it. And turn the upper layer off by clicking on the eyeball icon. This is how it should look now.
Apply 2,5 pixels Gaussian Blur. Filter | Blur | Gaussian Blur... And now go to Filter | Stylize | Emboss... Use these settings: Angle: 135, Height: 6, Amout: 100 %.
Add a texture: Filter | Texture | Texturizer... I have a propasol for settings, look at the picture. (Ofcaurse it is not necessary to add a texture)
Make the upper layer active by clicking on it. And be sure the the eyeball is there too. And now... Select | Load Selection... | OK Choose a new color as Foreground color and hit alt + delete to fill the selection with it or use the Paint Bucket Tool. Select | Deselect
Now we want the Layer 1 emboss effects to shine through the color in the top layer. Simply do this: Go to the drop down box in the layers palette and change layer mode to hard light. Now we are done and isn't it nice ?