Ubangian languages have words for only three basic colours: 'black, etc.' ('cool colours'), 'red, etc. ('warm' colors), 'white, brilliant, etc.' Ideophones can be used to some extent to differentiate the colours, but Sango has very few ideophones. For 'black' one can add kpiti kpiti.
Source: Bouquiaux et al. 1978: 352