It would help me if you included several photographs of the existing house.

Break up some of the cement leading to the former carport and then plant some grass and/or flowers. You could even keep some of the existing cement as a patio area. Still break up some of the cement between driveway and patio. Use a fence or great landscaping to indicate individual, separate areas.

Browns and beiges are devlishly difficult to do well. And even harder for us who are interpreting these colours on our screens. On my screen your roof is not at all orange-brown. I took a shot of it your roof, enlarged it and this is what I see. A pinkish brown that is pretty close to the rosy brown shown below it. The darker colours are a burgundy brown or wine brown. The blue beside it is the complementary colour to pinkish brown - opposite on the colour wheel. On my screen and to my eye, this looks better than an orange door. Even the bit of orange on the pavement at the bottom of your picture seems to clash with the roof. The blue could be lighter or darker or less saturated, but stay in the same general level of blueness vs going more green-blue or more purple-blue. https://www.color-name.com/rosy-brown.color https://www.farrow-ball.com/en-us/colour-by-nature/deep-reddish-brown You could do worse than get a professional colour consultant on this. Whatever you choose, I'd paint some big sample boards and look at it in different lights before you pick up the paint brush.

IMo a colored fornt door would not be my choice ilove the garage doors and IMO I would look for a door that kind of mimics that in some way. IMO would be a door similar to this syle with the frosted glass . MCM was all about simple and I love your house so be acreful not to go too far out of the box.I would however go to work on that front landscaping . I agree to colored pots on the deckand I had that same FP in my other house and it was orange maybe think about adding the color there too.