Made these (in Photoshop) to class my Renoise up a bit, and thought of you. I use Renoise 2.8, but it should work with other versions.
Here are two sample photos with the sat_cabin.xml theme: Louis texture LouisShadowed texture
Download (unzip and put the ‘Louis’ and ‘LouisShadowed’ folders in your ‘Renoise x.x.x\Skin\Textures’ folder): Speedyshare link
You can use them by changing the Texture setting in the theme tab of Preferences. Just look at the sample photos to see.
I made it originally just because I was bored and wanted to see how the textures worked, but it’s growing on me. I don’t actually use it with that theme, I just used that in the sample photos because it makes it really obvious. I think I’m just using the default right now. It still looks good, but more subtle.