If you find yourself in Edinburgh and near Rhubaba Studios on Arthur Street, you might want to pop into Workhorse Press. This independent printing and publishing studio that was founded in 2010 provides an excellent Risograph (RISO) service. The studio space is currently cohabited with two very talented artists, Dominic Kesterton and Orlando Lloyd, be sure to check out their work. They have eight colour drums in stock for you to choose from Black, Red, Pink, Purple, Blue, Green and Yellow. Get creating.
Swatches of their available colours and tints.