As you can see, the main menu is color coded for each item. Opening a main item gives you a secondary (and even a tertiary) flyout menu of the same color.
One problem is that there are really only so many distinct primary hues. So you can see the yellowish color is already repeated once, and some colors are similar. But I get why they did it, to make each section have it's own color. I should note that I am not aware of any complaints about the menu.
Still, it sits uneasily with me. I feel like there is something that can be improved here, but I'm not sure what. It just feels old and clunky.
I should also mention this is a touchscreen, so the items are large on purpose, and need to stay that way.