Uplink nodes not colorized in topology view

In hopglass in the topology view you could easily check if all your uplink nodes with a mesh-vpn are online. An uplink node would be drawn with a blue circle instead of a white/beige one:

In meshviewer however this is not as easily visible, there nodes all have the same colour:

## Is your feature request related to a problem? Please describe.

It is not as easily possible to spot missing backup uplinks / mesh-vpn connections in the topology view of Meshviewer as it is in Hopglass.

## Describe the solution you'd like

In the topology view uplink nodes should be drawn in blue like in hopglass (or at least highlighted in some way).

## Describe alternatives you've considered

N/A

## Additional context

N/A