This big cassetta frame has been painted with a deep plum coloured bole (it's called Victorian Plum), I use a red bole most often, made by Lefranc and Bougeois. There are various colours available from a few makers/suppliers, many are listed or described as period or antique type colours but in reality I think they lack the subtle mellow colour of bole scene on antique frames. To match this on new frames bole colours can be mixed together to reach the required shade.
