I copied "SUNSET1.BMP" to "NIGHT II.BMP" inside the /abb/night directory. That fixed "ABB Evening" scheme for me.
I'm in the same boat, I rarely use the trip comptuer. So I copied the old V3.25 "ui_pioneer/common/tripcomputer.ui" inside the data.zip file and put it into the new data.zip file. So, now I'm a happy camper.
I feel like V4 the screen responses are a lot faster.