And solar modules are similar to those for photovoltaics, primarily technical components, less design-optimized.
Maybe solar modules will someday have the status of a car, which are also technical but still design-optimized. But that is probably a discussion that does not belong here.
Who has a red roof and some spare change to contribute?
We will have a red roof soon, but I don’t know yet if there will still be any "spare change" left. In my opinion, however, this could become a lucrative niche product, because with a bit more money for house construction I would not accept anthracite-colored solar thermal modules on a red or otherwise light-colored roof.
One should not put solar thermal systems on the roof anymore anyway. They never pay off and were only a transitional technology when photovoltaics were still too expensive.