Kit-of parts tinting system for colour adjustment of, in particular aqueous, coating compositions, comprising A) at least one aqueous colour composition, preferably at least two aqueous colour compositions, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one HALS-stabilizer (Hindered Amine Light Stabilizer), at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, at least one UV-absorber and water and optionally at least one first additive and/or optionally at least one filler, contain or consist thereof, and B) at least one, in particular precisely one, tinting base composition consisting of or containing at least one binder, at least one liquid medium and optionally at least one second additive, or comprising A') at least one aqueous colour composition, preferably at least two aqueous colour compositions, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, and water and optionally at least one first additive contain or consisting thereof, wherein the colour composition A') is substantially free of HALS-stabilizers and substantially free of UV-absorbers, B) at least one, in particular precisely one, tinting base composition consisting of or containing at least one binder, at least one liquid medium and optionally at least one second additive, and C) at least one, in particular pasty, composition containing at least one HALS-stabilizer and at least one UV-absorber. A) at least one aqueous colour composition, preferably at least two aqueous colour compositions, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one HALS-stabilizer (Hindered Amine Light Stabilizer), at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, at least one UV-absorber and water and optionally at least one first additive and/or optionally at least one filler, contain or consist thereof, and wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one HALS-stabilizer (Hindered Amine Light Stabilizer), at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, at least one UV-absorber and water and optionally at least one first additive and/or optionally at least one filler, contain or consist thereof, and B) at least one, in particular precisely one, tinting base composition consisting of or containing at least one binder, at least one liquid medium and optionally at least one second additive, or comprising A') at least one aqueous colour composition, preferably at least two aqueous colour compositions, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, and water and optionally at least one first additive contain or consisting thereof, wherein the colour composition A') is substantially free of HALS-stabilizers and substantially free of UV-absorbers, B) at least one, in particular precisely one, tinting base composition consisting of or containing at least one binder, at least one liquid medium and optionally at least one second additive, and C) at least one, in particular pasty, composition containing at least one HALS-stabilizer and at least one UV-absorber. A') at least one aqueous colour composition, preferably at least two aqueous colour compositions, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, and water and optionally at least one first additive contain or consisting thereof, wherein the colour composition A') is substantially free of HALS-stabilizers and substantially free of UV-absorbers, wherein at least one aqueous colour composition, preferably a plurality of aqueous colour compositions, at least one pigment, at least one wetting and/or dispersing agent, at least one humectant, in particular polyalkylene glycols, and water and optionally at least one first additive contain or consisting thereof, wherein the colour composition A') is substantially free of HALS-stabilizers and substantially free of UV-absorbers, B) at least one, in particular precisely one, tinting base composition consisting of or containing at least one binder, at least one liquid medium and optionally at least one second additive, and C) at least one, in particular pasty, composition containing at least one HALS-stabilizer and at least one UV-absorber.