I liked the bw images too much but color ones looks wrong or over processed or you use ektar film. I dont know but its strange looking colors.
But bw is very successful , color images seem to me created to get lots of colors and synthesized , not good. We do process the color images but to overcome of not fresh film , out dated developer or scanner glass. I used 8 leicas in 20 years and not get such colors , even close to it.
Forget your digital habits , use portra and trust your lens. Leica creates excellent colors but not Summilux also. Buy an Summicron and try again.