Not sure where you're located, but a gravel driveway may help to soften the house versus asphalt or concrete. Soften up the area with grasses. Here's a link to a photo of grasses with a hot color palette http://www.spacemakerpress.com/catalogue/catimages/st05imgb.jpg You can always choose a more muted color palette as well. I would definitely tier the plan heights so they're taller against the house and gradually get lower. It would help to bring the house to human scale and not appear towering above. The pathway could be in a natural stone - the same color as the gravel driveway (if you can do gravel).

Love blue tiles. Depending on how much sun and how hot your pool gets in the summer should dictate what color it is. We live in Arizona, so cool blues work best. Our neighbor has brown tile and a dark pebble tech pool. Looks like a swimming hole and gets really hot - 94% water in the summer. They obviously didn't think it through.

Oops photo didn't download. Will do shortly.

I was thinking a structure around the fireplace so you can still entertain and keep the fire going without worrying about the wind blowing it out. I also think some new grass would be what you need to brighten up the area as it's looking a bit dead (but that could just be due to the cold weather)