ref: https://discourse.nodered.org/t/better-accessibility-on-search-result-highlighting/86367

The current dashed-orange flashing border approach is a bit ugly and, as discussed in the above thread, not very accessible.

Not sure what the right approach will be; lots of suggestions in the thread, but none quite feel right to me.

Task to propose some alternative stylings for highlighted nodes.

Notes:

1. see function flashNode in view.js
2. relevant css class red-ui-flow-node-highlighted