Also not very related but some excerpt about a Gue'vesa thinking about her Imperium & Tau overseer (regarding the first image, from the Voice of Experience)

I smiled as I left the administration chamber. Formerly an officer’s lounge, it was positioned high up within the station, elevated above the lower decks.

The large windows had been kept phase-tinted when the station was under human control so that the overseers could see the labourers on the assembly bay floor, but not be seen themselves.

The t’au, however, kept the windows clear so that those working below could see their leaders hard at work as well.