People who can’t see their colour TV pay more than people who can’t see their B&W TV.

Oh to be a a fly on the wall when the inspector has to explain the difference to a blind person.

I think it made a lot more sense in the past. The license is set up so it’s a consumption based tax rather than taxing everyone. So only people with TVs paid TV tax. If colour increased the costs, only people consuming colour paid those increases. I imagine it made much more sense before consumption was ubiquitous