zenburn-low-contrast.minttyrc applies the sensibilites of the original low-contrast Zenburn Vim color scheme without disrupting the colors of popular text-based user interfaces such as aptitude:

git clone https://github.com/agkozak/zenburn.minttyrc.git
cat zenburn.minttyrc/zenburn-low-contrast.minttyrc >> ~/.minttyrc

zenburn-high-contrast.minttyrc has a darker BackgroundColour, just like the high-contrast mode of the Zenburn Vim color scheme:

git clone https://github.com/agkozak/zenburn.minttyrc.git
cat zenburn.minttyrc/zenburn-high-contrast.minttyrc >> ~/.minttyrc