I am not a fan of your choices. I prefer the present color scheme.

I would concentrate in lightening up the entry by putting a light color for the door.

Get a good landscape architect to help with plantings.

Are the siding and roof in good condition? The siding looks very nice as is so unless it's in bad condition I would not personally change it as it's a very nice color. When the roof needs replacement black metal sounds nice. I'd suggest the black metal roof that you will eventually have on the house for the pole barn. You could go with a similar color siding on the barn, or go more barn-like with a red or green vertical metal siding. For me the biggest issue isn't the house roof or siding, it's landscaping --- which I know you are working on! I'd hire a really good landscaper and put my money there first as it will do the most for enhancing the exterior of your home.

If you have a picture from further away it might help others provide some specific landscaping ideas as well.

Sorry I do not think this house will suit a black metal roof and I agree the siding looks good as it is . You need to provide more info as to whay the cahnges at all. What is your idea of the perfect exterior maybe post some pics of that since I see none in your idea book. IMO landscaping comes after the extrior is done so slow down .

I think a dark green siding and black metal roof would look great, especially with the white window trim. As for the pole barn, it would be nice to have a cohesive look with the house. Maybe you could use the same black metal roof on the barn and go for a similar color siding, or you could opt for a different color that still complements the house. Landscaping is definitely important too. Adding more plants and flowers could really spruce up the exterior. You could also consider re-painting or completely replacing the siding, replacing the front door, and painting the window frames. I recently discovered a helpful website that might give you some ideas for exterior design: thecontinuum-thiamsiewavenue.com.sg.