Been feeling this lately as well. It may be a good idea to make some labels for it. In thinking of doing some wih one of those embossers. I also like to differentiate betweeen the cv and fx track buttons more easily. if only with a little bump, like on computer keyboards (keys J and F). I bet this can be done with an embosser label.

The Electribes were designed like you describe with the light up buttons, which i think was a good move from Korg.