Sometimes these "green" buildings ignore human nature. One that I work in came with modern low-flow residential sink taps in the coffee areas - that take 1-2 minutes to fill up a kettle - and low-flow shower heads in a locker room area kept cool enough that in winter you'd get the shivers even under a fully on, hot-as-it-goes shower.
After a howl of protest, they went in and removed the flow restrictors. Now the shower heads spout a satisfying amount of water and the sink taps work the way they should and life is good. Probably makes very little difference in the overall "greenness" of the building but these are just examples that I know of.