I use color snap from Sherwin Williams

I did try it on SW app online today and it basically did what I needed. I had to manually define the area for trim instead of just being able to click on it. We need a better outside picture to really see the colors with any amount of accuracy, Thanks for the offer.

SketchUp is probably the best but not super easy to learn.

the siding is in rough shape. it may not look too bad from the photos but it's over 30 years old and is showing major wear. the side of the house tends to be a wind channel and the siding is buckling, routinely blows loose, and a piece or two has blown off and my husband has to keep tacking it down. it's aluminum so its getting creases from damage. it's also very faded in spots since the house is full sun.