Yeah, I liked that the Monster Maroons had four colors, with command in white. Or how in TMP there were actual structural, practical differences in the uniforms so you knew what you were looking at.Trek has not canonically remained beholden to the three division/color scheme, nor does it need to.
See the TOS films.
Also, even though command in TOS is supposed to be green, only Shatner's uniform showed up green onscreen, so basically four divisions in TOS, too.
And the color meanings change over time. TOS era command is yellow/green, in TNG it's red, and in the 29th century it's blue. By the 32nd century it's back to red.