I’m trying to theme LMMS to look more like GIMP on my Linux Mint 12 (Mate) desktop with default theme.
…is what GIMP looks like. Here’s how far I’ve got with LMMS:-
So far so good! I now need to locate the rest of the colours to sort all the other stuff out, like rulers and the expanding left menu and it’s bar. Also the main menu.
LMMS is a chocolate factory of delight. Every sample, every effect, every preset and every knob you can turn is a whole new playground waiting to be explored…
The Squared Hippy 
I also made a skin, but in the style.css file isn’t any code to change the dark blue color. I only changed the left menubar with the css file.
Yeah, I found the sidebar too, I made it a gradient to match the top file. I’m in the process of temporarily switching everything red to see what’s what…
Can’t remember if this is right, don’t have it on me, try this…
QMenuBar {
background-color: #dddddd;
color: black;
}
LMMS really needs new themes and this looks good already!