Transparent background in rack elevations

[gabrielat]

I've noticed that whenever I create a device type using an image that is slightly smaller, the background is coloured after the device role. But to me, looks better with a transparent background. I found a way around it, by changing a little the code in netbox/dcim/svg/racks.py:176

Instead of:

        # Add rect element to hyperlink
        if color:
            link.add(Rect(coords, size, style=f'fill: #{color}', class_=f'slot{css_extra}'))
        else:
            link.add(Rect(coords, size, class_=f'slot blocked{css_extra}'))
        link.add(Text(name, insert=text_coords, fill=text_color, class_=f'label{css_extra}'))

I changed to:

        # Add rect element to hyperlink
        if color and image:
            link.add(Rect(coords, size, style=f'fill: None', class_=f'slot{css_extra}'))
        elif color and not image:
            link.add(Rect(coords, size, style=f'fill: #{color}', class_=f'slot{css_extra}'))
        else:
            link.add(Rect(coords, size, class_=f'slot blocked{css_extra}'))
        link.add(Text(name, insert=text_coords, fill=text_color, class_=f'label{css_extra}'))

By doing this, I went from this:

To this: