Hi, PepperP and
!
I love Denmark! So so beautiful there. Yep, your semps probably lost their color from not being in sun. Mine turn mostly green in summer, the heat and having to keep them shaded!
Have you tried a grow/plant light? I've never tried it but using one might help prevent etiolation from setting in. There are also bird lights that people use to keep their parrots healthy during the winter. One of those might have enough artificial sunlight to help your plants.
You last picture looks like a Perle von Nurnberg echeveria to me. Echeverias are fun too!
your plants look very nice!
