A lighting device, comprising: an optical system including a convex lens; a plurality of light sources arranged in a matrix, the plurality of light sources including a first plurality of light sources configured to irradiate a first region of the optical system with a first light color, a second plurality of light sources configured to irradiate a second region of the optical system with a second light color; and a processor configured to control interaction of the first plurality of light sources and the second plurality of light sources with a third plurality of light sources and to control mixing of the first light color and the second light color; wherein the first region defines a first annular region within a peripheral portion of the optical system; wherein the second region defines a second annular region within the peripheral portion of the optical system; wherein a central axis extends through the optical system and the first plurality of light sources is disposed about the central axis; wherein the second plurality of light sources is disposed about the central axis between the first plurality of light sources and the central axis; wherein the third plurality of light sources is disposed about the central axis between the second plurality of light sources and the central axis, wherein the third plurality of light sources is configured to illuminate a central portion of the optical system with a third light color, the central portion positioned inward of the second region with respect to the central axis; wherein a convex surface of the convex lens extends towards the plurality of light sources; wherein the first light color within the first region of the optical system is refracted at a first angle by the convex lens and the second light color within the second region of the optical system is refracted at a second angle, different from the first angle, such that the first light color, the second light color and the third light color are mixed at the peripheral portion to produce a white light exiting the peripheral portion of the convex lens and configured to pass through a focal point toward a target surface. an optical system including a convex lens; a plurality of light sources arranged in a matrix, the plurality of light sources including a first plurality of light sources configured to irradiate a first region of the optical system with a first light color, a second plurality of light sources configured to irradiate a second region of the optical system with a second light color; and a processor configured to control interaction of the first plurality of light sources and the second plurality of light sources with a third plurality of light sources and to control mixing of the first light color and the second light color; wherein the first region defines a first annular region within a peripheral portion of the optical system; wherein the second region defines a second annular region within the peripheral portion of the optical system; wherein a central axis extends through the optical system and the first plurality of light sources is disposed about the central axis; wherein the second plurality of light sources is disposed about the central axis between the first plurality of light sources and the central axis; wherein the third plurality of light sources is disposed about the central axis between the second plurality of light sources and the central axis, wherein the third plurality of light sources is configured to illuminate a central portion of the optical system with a third light color, the central portion positioned inward of the second region with respect to the central axis; wherein a convex surface of the convex lens extends towards the plurality of light sources; wherein the first light color within the first region of the optical system is refracted at a first angle by the convex lens and the second light color within the second region of the optical system is refracted at a second angle, different from the first angle, such that the first light color, the second light color and the third light color are mixed at the peripheral portion to produce a white light exiting the peripheral portion of the convex lens and configured to pass through a focal point toward a target surface.