I like the sheep shot. But overall I think I know why your images are on the dark saturated side. One is the light, heavy overcast. so that somber look can't be avoided. And two, as we have discussed many times, sometimes its about expression and not about accuracy of tones or colours, or correct white balance. This is not to say, I think it works on all the images, but when the graphic nature of the subject comes through, such as on the sheep image and stone fence image, I think it is appropriate. Snow is notoriously difficult to correctly depict under any lighting and I have learned that what works best is what best brings out what I want to express.
JMR