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I think the yellow and grey might bring out the gold-ish-ness of the couch.. I'd try to go with more blue colors.. Maybe some navy pillows and a rug with the blue in it as well. The curtains, that ying-yang rug, and the lilac rug just gotta go.. They're dwarfing all the sophistication this room will be able to have with that tile floor and those big beautiful windows. I love the dining room chairs!

Modern houses like yours tend to be painted neutral colors. I'd go for white or off white with trim in different colors. I'd probably accentuate the horizontals, painting your porch railings a contrasting color. You can go to a website like SherwinWilliams, up load a better picture of your house and play around with color ideas. https://www.houzz.com/photos/texas-residence-contemporary-exterior-dallas-phvw-vp~1994082-Residence-contemporary-exterior-dallas https://www.houzz.com/photos/san-clemente-california-home-contemporary-exterior-orange-county-phvw-vp~2456325-CLEMENTE-California-Home-contemporary-exterior-orange-county https://www.houzz.com/photos/oakland-hills-residence-contemporary-exterior-san-francisco-phvw-vp~52742-Hills-Residence-contemporary-other-metro

We get the same dry patches that are caused by grubs here in the Pacific Northwest. We use a three pronged cultivating tool to pull out the dead grass, reseed and put peat moss over it to protect the seed. It's a chronic problem, and we've been dealing with it for years now. I don't know that there is a solution without applying killer chemicals to the soil.