Tomophy - 2016-04-15

I would totally agree with you. The following functions are definitely minimum requirements for mindmapping software in these days.
Automatic Coloring
Callouts
* Floating Nodes

I think the lack of these functions is why FreeMind looks out of date and has lost its users.
https://www.google.com/trends/explore#q=freemind%2C%20xmind

So I would strongly hope these funtions should be implemented in the next version of FreeMind soon.