There aren’t many options for customizability here. The keyboard’s backlit but only in white. My review sample had tactile brown switches. The switches are manufactured by Kailh, and there’s a choice of tactile browns, clicky blues, and linear reds.
Personally, I prefer my mechanical switches to be full-height, but shorter switches like these are likely to feel more familiar if you’re used to typing on laptop-style scissor switches like those found on the other keyboards in Logitech’s Master series - like the MX Keys. This is a low-profile keyboard, which means its switches are shorter, and there’s not as much travel as what you’d get from a full-height mechanical keyboard. It’s all very sensible and well thought out. Like some of Logitech’s previous keyboards, the MX Mechanical Mini has sensors to detect when your hands are nearby and turn on its backlight before you press a key - a neat feature if you’re reaching for the keyboard in a dimly lit room. Although you can customize how the LEDs flash, they’re not RGB and can’t illuminate your desk like a multicolored Christmas tree. It’s backlit, but only with plain white LEDs. Around top, there’s a power switch and USB-C connection for charging, and underneath are a pair of flip-out feet to tilt the keyboard up at an 8-degree angle. The MX Mechanical Mini has a muted two-tone design that’s unlikely to attract too much attention. Any backlight color you want, so long as it’s white