The spurs were also bi-coloured, purple and white.[28] In a few cases where emperors wished to show special favour to a son (Constantine Palaiologos under Michael VIII Palaiologos and Matthew Kantakouzenos under John VI Kantakouzenos), red boots like the emperor's were substituted, elevating its holder to an undefined quasi-imperial rank "above the despots" (ὑπὲρ δεσπότας).[29][30] The despot's saddle and horse furniture were similar to that of the emperor, likewise in purple and white, decorated with pearl eagles.