Move the converters to the resource dictionary.
Remove overlay canvas blank background color.
Add canvas color to background.
Remove an old constructor.
Add new resource dictionaries.
Add bindings on ports to resource dictionaries.
Move all colors and brushes to the resource dictionaries.
Port bindings no longer required...

...and converter takes inputs from resource dictionary.
Cleanup node ui.
Converter cleanup.
Move converters out of this dictionary.
Merge cleanup.