Hello,
I have customized all the colors for my theme but I haven’t been able to figure out how to change all the panels that are affected when you pick from the ‘Graphics’ pull down. I set it to ‘none’ and that just makes them grey. I’m trying to just change them all to white. Thanks!
I was in a similar situation and ended up making my own texture pack for this purpose. The default packs are located in Renoise\Skin\Textures – I copied one of those, gave it a unique name and modified the files within. Renoise automatically recognized the new folder as a source for the texture selection option. Even though I’m not sure whether this is the best (or the only?) solution, it worked quite well for me. 
Great, thanks, I’ll give it a shot. Seems like something so simple that shouldn’t need a workaround 