Not sure if they’re going for a mirrored look for aesthetics or to reduce heating from the sun, but interestingly, white paint and a mirrored surface can be equally reflective, which is why some roofs are white in dry/hot climates.
How light reflects from a mirrored surface could be a big problem for birds and bees though, shows up in these topics, a bit:
Edit: An interesting video on white paint reflectivity with experiments (25 min) much better than this one of paint drying (10 hours).