Colourful lakelets (Polish "Kolorowe Jeziorka") is the name of three (sometimes four) artificial ponds formed in place of former mines at the slope of Wielka Kopa mountain (871 m) in Rudawy Janowickie, range in Sudetes Mountains, Poland. The biggest one and the eldest (1785) was named Hoffnung and now became the Purple lakelet. Names of the other mines were: Neues Glück (1793, presently Azure Lakelet), and Gustav Grube (1796; the Green Lakelet).