Solar glazing unit, suitable for photovoltaic modules and solar thermal collectors, comprising a substrate delimited by two main faces and a multi-layered interference filter also delimited by two main faces, one main face of said substrate being adapted to be in contact with an incident medium, the other main face being in contact with one of the main faces of said interference filter, the other main face of said interference filter being adapted to be in contact with an exit medium; said incident medium having a refractive index n inc = 1, said substrate having a refractive index n substrate defined as follows: 1.45 ≤ n substrate ≤ 1.6 at 550 nm, and said exit medium having a refractive index n exit = 1 or defined as follows 1.45 ≤ n exit ≤ 1.6 at 550 nm; and wherein the multi-layered interference filter of said unit includes a plurality of stacked alternating layers of high refractive index n H and low refractive index n L configured to produce a CIE colour stability Δ E Norm *, as observed under daylight illumination CIE D65 at higher angles of reflection θ r corresponding to θ r > 10°, that is less than 15 or Δ E Norm * ≤ θ r / 3 ° for 10° < θ r ≤ 60°; wherein said multi-layered interference filter comprises one or more metal oxide layers with small absorption expressed by an extinction coefficient (k) ≤ 0.2 for wavelengths λ with 450 nm ≤ λ ≤ 2500 nm, and wherein said multi-layered interference filter composed of the plurality of stacked alternating layers with refractive indices n L and n H has a ratio of the refractive indices n L /n H of chosen materials between 0.75 and 0.95; characterized in that the plurality of stacked alternating layers of high and low refractive indices of the multi-layered interference filter is further configured to produce a visible colour of reflection of the solar glazing unit, visible to a human eye from the main face of the substrate adapted to be in contact with the incident medium and under daylight illumination CIE D65 at near-normal angle of reflection θ r corresponding to θ r ≤ 10°, characterised by CIE colour coordinates x, y defined by the following expression 0.4 - 0.33 ∗ x ≤ y ≤ 1.25 ∗ x corresponding to yellowish-orange to red-purplish colour reflection, and in that the plurality of stacked alternating layers of high and low refractive indices of the multi-layered interference filter is further configured to produce a reflectance spectrum comprising (i) a spectral reflectance peak (λ P) at near-normal observation angle of reflection corresponding to θ r ≤ 10° in a wavelength range ≥ 700 nm and ≤ 1600 nm and which shifts to lower wavelengths with increasing angle of observation; and (ii) a shoulder or a secondary peak (λ S) at a wavelength ≥ 500nm and ≤ 780nm and at a shorter wavelength to that of the spectral reflectance peak (λ P) and in a wavelength range of said visible colour of reflection of the solar glazing unit at near-normal angle of reflection corresponding to θ r ≤ 10°. wherein the multi-layered interference filter of said unit includes a plurality of stacked alternating layers of high refractive index n H and low refractive index n L configured to produce a CIE colour stability Δ E Norm *, as observed under daylight illumination CIE D65 at higher angles of reflection θ r corresponding to θ r > 10°, that is less than 15 or Δ E Norm * ≤ θ r / 3 ° for 10° < θ r ≤ 60°; wherein said multi-layered interference filter comprises one or more metal oxide layers with small absorption expressed by an extinction coefficient (k) ≤ 0.2 for wavelengths λ with 450 nm ≤ λ ≤ 2500 nm, and wherein said multi-layered interference filter composed of the plurality of stacked alternating layers with refractive indices n L and n H has a ratio of the refractive indices n L /n H of chosen materials between 0.75 and 0.95; characterized in that the plurality of stacked alternating layers of high and low refractive indices of the multi-layered interference filter is further configured to produce a visible colour of reflection of the solar glazing unit, visible to a human eye from the main face of the substrate adapted to be in contact with the incident medium and under daylight illumination CIE D65 at near-normal angle of reflection θ r corresponding to θ r ≤ 10°, characterised by CIE colour coordinates x, y defined by the following expression 0.4 - 0.33 ∗ x ≤ y ≤ 1.25 ∗ x corresponding to yellowish-orange to red-purplish colour reflection, and in that the plurality of stacked alternating layers of high and low refractive indices of the multi-layered interference filter is further configured to produce a reflectance spectrum comprising (i) a spectral reflectance peak (λ P) at near-normal observation angle of reflection corresponding to θ r ≤ 10° in a wavelength range ≥ 700 nm and ≤ 1600 nm and which shifts to lower wavelengths with increasing angle of observation; and (ii) a shoulder or a secondary peak (λ S) at a wavelength ≥ 500nm and ≤ 780nm and at a shorter wavelength to that of the spectral reflectance peak (λ P) and in a wavelength range of said visible colour of reflection of the solar glazing unit at near-normal angle of reflection corresponding to θ r ≤ 10°.