תרגום - אנגלית-טורקית - "The window is tinted with a nostalgic color"

natsukashii= dear, desired, missed.
iro= color
mado= window
somaru= to dye

So I think it is the best way to translate it.

In portuguese it would be: "A janela tinge-se de uma cor nostálgica"

Glad to help