What type of switches should I use?

Any standard marine-type switch of the appropriate Amp rating can be used to turn on/off or switch between modes of any Single or Dual-Color YPHOS fixture.

Such a switch is YPHOS On/Off Switch.

The YPHOS Dashboard Switch is meant to be used with Y:Link-enabled hubs and allows you to turn on/off your lights, as well as cycle between color presets. The main difference is that it is a 3-state (MON) – OFF – (MON) switch instead of an OFF – ON Switch. You can read more here.