Colleen is the daughter of the well known Keringe artist Kathleen Wallace and sister to Gabrielle Wallace,also an artist.
Colleen began painting in 1990. Her paintings are dot designs with vibrant colours and various styles which include Awelye (women's ceremonies) and the bush yam dreaming which she inherited from her grandfather, famous Kenny Timouth Panangka.
Colleen lives with her family at Mulga Bore in Utopia region.