sage greens work well, the shutters could go, or be replaced a bit larger. the front door needs to be a pop since its set back, maybe a blue tone. soft yellow trim is nice with this combo

I think changing your front porch posts and railing would give your house a more modern feel, too. Plain square posts with cable railing, for example. Some examples: https://www.front-porch-ideas-and-more.com/stainless-steel-cable-railing.html I don’t know your building codes, you could check to see if it’s ok to just have posts with no railing. —————— For landscaping, I like your ideas of grasses and evergreens. I’m not familiar with conditions in your area, but your local nurseries can advise you. Take your pictures to show them. I’d incorporate decorative rock in the design. Not in place of mulch, or as much as these, but just some spots in the beds. You could also have grasses in modern-style containers, to give some interest. One more idea: change your light post fixture to something with a more contemporary aesthetic:

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.

Taking the siding to the ground might not be the best idea, My husband put a coating on ours (think it was called Fibercrete) that made it look more like poured concrete that block. Then we just left it the concrete color. If your ambitious and in a cold climate, it is possible to add rigid foam insulation the the exterior of the block... https://www.familyhandyman.com/walls/foundation-insulation-panels/view-all/