You can change the color of your buttons and background using the paintbrush tool on the tools palette. You can add boxes and borders from the decorations palette and use the paintbrush to color the border and background. If I have a group of controls and indicators that have something in common (like controls for an instrument), I usually create a box with a light background color, and put the controls inside the box. I would color the controls to be pleasing to the eye when inside the colored box. I also add a colored text string at the top of the box as a label for the entire box of controls. You can do lots to pretty it up with just decorations and the paintbrush tool. See the attached example.