What does your architect recommend? With the brick only on the front, I'd rip it off and match the other siding on the sides and rear in a heartbeat. That would allow easy changing out of those windows. It's already a 200K+ to +++ project. No point in doing it at all unless you can get rid of the brick that you hate. You might as well move as undergo that amount of expense anyway.

Your property is so beautiful i can see why you live it. Your home looks like 80s contemporary style. Your brick is fine. The roof change is key. I don’t agree with metal roof for this style home. That look is more country, or traditional/farmhouse look. Not right for your home imo. I would recommend Weathered Wood HD by GAF Timberline shingle. Then once it is on, a nice coordinating color for trim and gutters etc will evolve. Your front door is hidden so select color for that last. A deep gold might look good. A dark color won’t do much for your front facade. So start with roof.

That house could look good in almost any color. White, off white, yellow, green and darker colors too. Generally a darker roof like charcoal will work with more colors. Trim color is also important, and will make a big impact on the overall look. Trim can complement instead of contrast. There are plenty of images here on houzz and other sites to give you some ideas. You can also have the house modeled in software and apply various colors and materials to see how they would look. Read down in this thread for an example. https://www.houzz.com/discussions/4710835/help-with-exterior-colors

Also we will be replacing the columns w something more stylish. Do that first because the design, proportion of the columns will inform color choice.