What do I mean with poor & downright awful? It's not just a blue cast in my opinion, but really pale skin colors. I attach two images, taken on the same day, once with the sun shining, once with the sun behind a cloud. Note that I already did some digital postprocessing with these images (just color & contrast, so please APUG don't kill me for posting them)
I understand there is the 81 filter series as well as their supposedly german KB/KR couterparts. In an ideal world I would get one kind of filter for all the filter thread diameters I regularly use and be done with it. My main question was whether there is such a silver bullet like filter which corrects these ugly colors for 80 or 90% of these cases.