We did acrylic, I don't know much about it other than it was more expensive. But due to it being winter here and a slow time for the stucco business they did it for the same cost as regular stucco to keep working. It took a while as the exterior of the house had to be hoarded in and heated. With acrylic you can pick any color you want including darker colors which are limited in regular stucco. We liked the smooth even texture, some of the regular stucco houses we looked at were patchy in places and the color on the darker stucco were very uneven in spots. We also used the foam method which adds to your homes insulation. Here's our house:

I went to see the neighbor building by the same construction company and they put black window frames (I don't know what casings are, I`m not a native English speaker) so I guess I misunderstood the sales guy, or he didn't really know. I am 100% they will put the same style since the 2 buildings will be connected in the end: So what do you think about the floor ? :) Is a light gray good enough ?

If I am looking at it correctly and with the door being not really visible and in an alcove you should be fine. Maybe pick something out in a door and post a picture but I think you will be fine.

Again to be clear, I was the one who made the window and color scheme selections early-on as I had to choose a whole-house scheme in order to settle on frame/sash colors so that we could order windows. The "third" architect was/is an assistant to the one who designed our house and was my primary consultant in finalizing the siding and trim colors (and hence the original dilemma and possible rescue of the color scheme). I had no expectations of this house looking historic and would have considered a structure of this size and simple architecture to be boring and monolithic were it all the same color. Perhaps I should have asked for help at an earlier point than I did but I do not transfer "blame" (if the word even applies) to anyone else for however the color scheme turns out. If nothing else I can always return to my original plan of having different trim colors on the upper and lower levels, which I didn't think looked that bad. Here is a screenshot I was able to save of the front elevation with all-green trim: