 Watercolour is a 2008–2012 built settlement and neighbourhood in Redhill towards the village of Merstham across lakes from the Greensand Ridge of the wooded village of Bletchingley and on the site of the former Holmethorpe Gravel Quarry.Redstone Hill is above the Royal Mail sorting office and depot, centred around one of three Redhill conservation areas, across the station using the A25 or subway from most of the town.This neighbourhood includes a hotel-restaurant and unusually for a conservation area, no nationally listed buildings though some buildings are locally listed.