Thanks for the feedback, Stan! We’ve had a few requests around icons, but this is a unique one! 
One of the requests we’ve had is to be able to use user supplied icons - either being able to link to an icon that the user has hosted somewhere or perhaps even be able to upload custom icons. We have it on our tracker and interest in icon related enhancements seems to be growing!
Considering that there’s lots of software packages available dedicated to graphic design, I think the ability for a user to design their own icon using one of those packages and then upload it might be a good approach. That would let us continue to focus on value added dashboard UI features while still providing an approach for custom icons. That being said, if there’s enough user interest in a built-in custom icon designer, we’re always open to considering it!