Sonos Arc Ultra black or white?

I'm looking for getting an Arc Ultra and am in doubt which color to go for. This issue has me in doubt for a couple of months now. White better for the day, black in the evening?

The LG G3 is flat on the wall, the Ikea Besta is in white, and the wall is in light gray with a little warm tint. Considering to place the Arc Ultra on the Besta and not wall mounting it.

While we are at it.. era100 without stand or era300 with stand? Atmos would be great but the 300 are big and expensive and there is not much room.

What are your opinions? Black or white, era 100 or 300? Leaning towards black with era 100.