 Once the Trust took ownership , scaffolding was placed in the hallway to repair the roof lantern . While this was in place the architectural paint analyst Lisa Oestreicher was able to examine the decorative scheme that had been used in the spaces and room frequented by the public . Three principal phases were identified : 1860s original ; 1870s updates and adaptions ; 1887 – 90 redecoration , which returned the main spaces to the original green colours and motifs created by Crace . Once lantern repairs were complete , the Trust replaced the elderly chenille carpet destroyed by contractors working for Christie 's with a new Wilton carpet with a replica design by Linney Cooper , bought with £ 45 @,@ 000 from public lottery donations . 
