I’m looking to produce a doublecircle where the outer circle is coloured black, and the inner circle is coloured blue. If I use the following DOT code,

```
digraph {
1 [color=blue shape=doublecircle]
}
```

and render it with `dot`

, I get the following,

Is there any way of producing a doublecircle where the inner and outer circles are set to two different colours? Any help would be greatly appreciated - thank you in advance.