Lighting unit

A method for producing a lighting unit, the method comprising:

• providing a printed circuit board supporting a lamp and an electronic circuit configured to activate the lamp;
• and
• applying by at least one of inkjet printing and screen printing a decorative layer directly on a surface of the printed circuit board, wherein the electronic circuit is provided with contact elements arranged on the surface of the printed circuit board and configured to contact an electrochromic layer, wherein the electrochromic layer is applied extending over the lamp, wherein the electrochromic layer can be brought into a first transparent state or a second translucent state by activation by the electronic circuit, wherein light emitted from the lamp only passes through the first transparent state of the electrochromic layer, and wherein the electrochromic layer is configured to hide the lamp until the lamp is activated;
• wherein applying the decorative layer further comprises applying the decorative layer over the electrochromic layer extending over the lamp and reducing saturation of the portion of the decorative layer in the region extending over the lamp.