When builders examined the exterior façade, they discovered that the black colour visible even in photographs from the mid-19th century was misleading; the bricks were actually yellow.
Kui ehitajad uurisid lähemalt välisfassaadi, avastasid nad, et seinatelliste must värv, mida näeb isegi 19. sajandi keskpaiga fotodelt, polegi ehtne; tegelikult olid tellised algselt olnud kollased.