A few years back I purchased a Pelargonium with small leaves that turn nearly black in the winter,and has pretty red flowers in the summer,but I can't remember what it's name is or its variety-

Even after all this time,it hasn't grown over 1 foot tall,and it has darker zonings amongst the green leaves in the summer.

If someone knows the answer,please let me know!

It's definitely a Zonal Geranium,not a Hardy Geranium.