`pdm` and `pdm-backand` are two different products, even though they related one to another closely. It was very confusing to me that during reading `pdm` documentation I have found myself in `pdm-backend` one without noticing. The problem is, both sides are using almost identical theme. # Proposed solution: use different themes Change the theme for `pdm-backend` somehow, e.g. to different color. It would contribute to more intuitive understanding that `pdm` differs from `pdm-backend` and what documentation is currently read.