Using Gimp (or other free software), how would I go about creating a subtle, "mild" texture, like the green in the header at forrst, or the gray in the background of the backbone.js home page?

Those textures seem random and very evenly distributed.

closed as off topic by Philip Regan Aug 11 '11 at 11:39

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    could you include a screenshot of the visuals you are looking for? they sites are most surely changing over time. – n611x007 Nov 4 '13 at 17:36

The basic technique is to create a background color or gradient, add a 50% Grey layer above it with its blend mode set to "Overlay" and add some noise to that layer using whatever method your program provides. In Photoshop it's a filter, and I seem to recall it's much the same in the gimp. Adjust the amount of noise (which should be monochromatic) and opacity to suit.


Use the noise filter to create a low opacity overlay/burn texture layer. Blamo!

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