Ultimately, you have to go with what you like. Personally, I like the all brick look you've mocked up. It's classic and durable. I didn't even notice the almond windows and when I did look at them, they looked very nice. Speaking for myself, I don't generally care for the white siding but it sound like you do! You should go with it if that's what you're looking for.

I take it there is no brick under that ?

Nice house and yard. Consider choosing a dark bold brown for the fascia/soffit (and, perhaps, around your bold red door) but leave all the window trim white. A lighter brown for the siding you're adding would work well. https://www.pellabranch.com/blog/global-blogs/black-window-frames/ If the additional work to be done is changing out the windows, replace the large ?fixed? window with a pair that open and consider choosing black frames. You could then consider choosing a dark bold brown for window trim as well.

Gray would be the last color I would pick to go along with tan brick. Unless it’s a very deep charcoal gray, almost black. Plus, to quote another poster I just read, ”gray is yesterday.” PS I wish my grass looked that good.