Ability to Adjust or define RGB, HEX, HSV and Opacity values for Node or Edge Colors. I got this from Paint.net for example.

Ability to add a legend that matches all the node colors. Make it so it doesn't export into CSV or JSON and is just some MetaData that is part of the file.

My Graphs are already too complex to have an array of properties displayed with them. Can you please add a toolbar button to hide properties. Thanks!

For connecting many diagrams to organize them, or work with them as parts of a whole, it'd be great to easily link between diagrams

Allowing to paste JSON directly into the properties would be a massive time saver. Can you implement this?