At 7.15 PM tonight the building of the National Palace of Culture will „light up“ in an array of different colours.   On the eve of National Enlighteners Day, 1 November special effect lights will bathe the palace, a first-time initiative that will turn Sofia‘s cultural centre into an attraction to many. The aim of the special effects will be to highlight key events and dates, with different colour combinations and shades depending on the events in question.