Nice and bright. You grow them in the shade, here, my sunny windowsill wouldn't get enough sun to bloom.

My father had his outside in the garden. Winter they didn't look so good but still managed to be okay. You never know, Inga, behind glass for you they might also do well.

Don't want to pressure you Inga, but how culd you resist a plant like this ;-)

Tempting though it is, I'm unable to have any more plants on my sunny windowsill and I try to have the fragrant ones.
My best, winter colour, comes from my, several colours of, bougainvilleas .
They brighten up the white mountains of snow outside my window, most of the winter.
Most of the snow has melted, although we saw a few flurries yesterday and today, but tonight's temps. are going to be -15°C, but with windchill, more like -20°c. Warmer days are coming, I hope. :>)

Oh well, I had to try. Bougainvilleas come in a lot of colours these days, and in compact forms. I understand they still need to be pruned though, If only they didn't have all those horrendous spikes. But that must be quite a contrast against a backdrop of snow. You should post some photos. If you're after fragrance you should also try Dracaenas or Sansevierias.