The city's diversity alderman Fons Duchateau hopes that the tunnel can at least be lit up in this way on a permanent basis, but technically this is not possible at the minute.
This week's illumination formed part of an LGTBIQ politeness campaign. Fons Duchateau: "Reactions were enormously enthusiastic. We will repeat the experiment during the Antwerp Pride. If reactions remain so positive, we'll have to look at permanent illumination after the elections. A tunnel permanently illuminated in the colours of the rainbow flag would be a world first!"