A point-of-sale tinting system or a point-of-use tinting system for a kit-of-parts tinting system, containing a basic tinting composition and at least one color or extender composition, comprising a supply container for a color or extender composition or a plurality of supply containers (6, 8, 10) for a plurality of color or extender compositions and, if applicable, one, two or more supply containers for a basic tinting composition or for components of a basic tinting composition, wherein the supply container(s) (6, 8, 10) has/have at least one container inlet, a container wall; comprising a container inner wall, a container bottom and a container outlet, further containing a container closure lid for a supply container, in particular a plurality of container closure lids for the plurality of supply containers (6, 8,10), adapted and arranged to reversibly close the one supply container, comprising a lid edge having an inner and an outer side and, preferably, a lid side wall having an inner and an outer side joining the lid edge, and a cover surface having an inner and an outer side connected to the lid edge or the lid side wall, characterized by at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can be assigned to the one supply container or at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can be assigned to the at least two supply containers (6, 8), in particular all, of the plurality of supply containers (6, 8, 10) or at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can in each case be assigned to one of the plurality of supply containers (6, 8, 10), wherein the at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources (20, 22, 24), is or are adapted and arranged to irradiate the inner wall of the container wall of at least one supply container, in particular of a supply container, at least in sections, and, if applicable, also the container inlet, the container bottom, accessories present in the supply container, in particular a stirring tool, a color or extender composition present in the supply container and/or the container outlet, at least in sections, with UV radiation, wherein the inner side of the lid edge and/or the inner side of the lid side wall and/or the inner side of the cover surface comprise(s) the at least one UV radiation source, in particular 2, 3 or 4 UV radiation sources, which is or are adapted and arranged to irradiate the inner wall of the container wall of the supply container, at least in sections, and, if applicable, also the container inlet, the inner side of the lid side wall, the container bottom, accessories present in the supply container, in particular a stirring tool, a color or extender composition present in the supply container and/or the container outlet, at least in sections, with UV radiation. a supply container for a color or extender composition or a plurality of supply containers (6, 8, 10) for a plurality of color or extender compositions and, if applicable, one, two or more supply containers for a basic tinting composition or for components of a basic tinting composition, wherein the supply container(s) (6, 8, 10) has/have at least one container inlet, a container wall; comprising a container inner wall, a container bottom and a container outlet, further containing a container closure lid for a supply container, in particular a plurality of container closure lids for the plurality of supply containers (6, 8,10), adapted and arranged to reversibly close the one supply container, comprising a lid edge having an inner and an outer side and, preferably, a lid side wall having an inner and an outer side joining the lid edge, and a cover surface having an inner and an outer side connected to the lid edge or the lid side wall, characterized by at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can be assigned to the one supply container or at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can be assigned to the at least two supply containers (6, 8), in particular all, of the plurality of supply containers (6, 8, 10) or at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources, which can in each case be assigned to one of the plurality of supply containers (6, 8, 10), wherein the at least one UV radiation source, in particular 2, 3, 4 or more UV radiation sources (20, 22, 24), is or are adapted and arranged to irradiate the inner wall of the container wall of at least one supply container, in particular of a supply container, at least in sections, and, if applicable, also the container inlet, the container bottom, accessories present in the supply container, in particular a stirring tool, a color or extender composition present in the supply container and/or the container outlet, at least in sections, with UV radiation, wherein the inner side of the lid edge and/or the inner side of the lid side wall and/or the inner side of the cover surface comprise(s) the at least one UV radiation source, in particular 2, 3 or 4 UV radiation sources, which is or are adapted and arranged to irradiate the inner wall of the container wall of the supply container, at least in sections, and, if applicable, also the container inlet, the inner side of the lid side wall, the container bottom, accessories present in the supply container, in particular a stirring tool, a color or extender composition present in the supply container and/or the container outlet, at least in sections, with UV radiation.