Ubercart terms and conditions + lightbox2 integration

Settings
uc_tc settings: Width: 800px, Height: 600px
Lightbox2 Html Content settings: Width:600px; Height:400px

The problem has to do with the Lightframe render not being output properly.
uc_tc.module - line 145

$options['attributes']['rel'] = "lightframe[|width:{$width}px; height: {$height}px;]";

For whatever reason, the colons ":" cause everything before them to be removed.

Output looks like this:

<a id="uc_tc_checkbox" rel="400px]" href="/terms-and-conditions?format=lightbox2">terms and conditions</a>

Also, the 400px is coming from Lightbox2 HTML Content settings and looks like uc_tc module settings are being ignored.

I've tried to get the colons to render properly but I'm missing something.

If you change line 145 to this, it works:
$options['attributes']['rel'] = "lightframe[]"