Appearance of Node connect

General
1

I was exploring node-red and was wondering if there is a way to change the color of connection only between two specific nodes(can be custom nodes/normal nodes)

2

Hi @Khk2000

To my knowledge, you cannot change the colour of wires.
the wires do not hold any user definable property.

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3

You can change the colour of ALL the wires though.

image
image876Ă—129 11.7 KB

This will make the wires thinner and blue:
A CSS file: mine is /home/pi/.node-red/editor.css containing this

.red-ui-flow-link-line {
        stroke: #0722fc;
        stroke-width: 1;
}

In settings.css change the editorTheme section like this

    /** Customising the editor
     * See https://nodered.org/docs/user-guide/runtime/configuration#editor-themes
     * for all available options.
     */
    editorTheme: {
       page: {
          css: "/home/pi/.node-red/editor.css"
       },
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4

I'm afraid they don't even have an identifier in the HTML so anything you tried would be very fragile even if you managed to select the right wire.

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5

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