The Shak is great below 40°F. Above that I use a Smartwool Shadow Hoody. The men's Shadow is, unfortunately, no longer made. I've used mine up to about 80°F. If you don't mind wearing the women's version and it fits, based on the experience of others, I would consider it. I would guess that fleece would be too warm as a base layer. Is this for use as a base layer? My advise assumes so. I can't help you on Melanzana but thanks for the link. They're new to me.
Edit: I wrote a review of the Shak and the Shadow. Check the Reader Reviews.