The actual rainbow is a spectrum of all frequencies between 400 and 700 nanometers, which is a smooth spectrum not a distinct set of 6 or 7 colors. But the real point is that the Sodomites have no qualms about blasphemy. They have a satanic spirit of antichrist in them.
Christians have faced this kind of totalitarianism before. “Just step on the image of Christ and we will leave you alone. Use mental reservation and just step right there. All will be well. It doesn’t mean anything. Just do it.”
Not unlike those Patriot Front feds throwing American flags on the ground after their fake protest parade (double overtime!). The time of reckoning comes for them, too. Dante' wrote traitors get an especially horrible circle in Hell. Looks like it's going to be very crowded.