The NUBUKE Foundation is a Ghanaian institution for contemporary art and culture based in Accra, which has been supporting Ghanaian artists in their practice since 2006, thereby serving as an important platform for the promotion of Ghanaian art, culture, and heritage. In 2014, Barbara Putz-Plecko initiated an international cooperation project with the Nubuke Foundation with the aim of establishing an Art and Research Center in the Upper West Region. In 2016, the new Nubuke Centre for Textiles and Clay opened in Wa. The collaborative project is still based at the Department of Textiles – Free, Applied, and Experimental Artistic Design (tex) and has been supported by Karin Altmann, Christoph Kaltenbrunner, and Manuel Wandl since 2018.

In 2018, Karin Altmann and Manuel Wandl initiated an archive of local plant dyes (Colours of the Ghanaian Savannah) as part of a knowledge base on textile material culture for the Nubuke Centre for Textiles and Clay in Wa.

For the Woori Festival 2023, Karin Altmann created an artistic visualization of this dye archive with her installation Colours of the Savannah and also began building a transcultural learning community in collaboration with local weavers.

In collaboration with project partner Tristan Toé, a dye garden was also established. The organic shape of the show garden encloses five beds in which various dye plants were cultivated. The color spectrum ranges from yellow and orange tones from dyer's chamomile, safflower, coreopsis, and tagetes to blue from indigo plants (Indigofera suffruticosa, Indigofera arrecta, and Persicaria tinctoria) to a dark gray-blue from black hollyhock. A mahogany tree was planted in the middle to highlight local resources and dyes and will serve as an important source of shade for the garden in the future.