The following is medium-difficulty photoshop work, so if you aren't too familiar with channels in photoshop, you'll have to polish up on them - I just learned how to use channels this last week.
I started with a flat #8C6239 colour layer.
Then I went into the Channels, and added a new channel where I used the [Render] > [Clouds] filter to produce the texture
Then I went back to the flat colour layer, used [Render] > [Lighting Effects], used Directional Lighting, 40 Intensity, Matte surface (-68), and a slightly positive ambience, using the new Clouds channel as the texture channel, with a height of 32 (fairly flat).
That produced a very 'orange' final colour, so I played with Hue & Saturation - changing the hue to more yellowish, and reducing saturation to produce the colour I want.
Then I trim the edges to produce the shape I want.
To get the coloration of the edges, use the colour burn tool.
To make the centre block pale and easy to read text on, block the area you want to use with the marquee selection tool, then [Selection] [Feather] 80 pixels or so. Then play with the Brightness & Contrast, increase brightness and decreasing contrast.