Trim part for a vehicle compartment comprising an external surface intended to be visible from the interior of the vehicle compartment and a decorative element extending on part of the external surface, said decorative element comprising an inner face (6, 14, 16) applied against the external surface and an outer face (8, 20, 22) opposite the inner face and intended to be visible from the interior of the vehicle compartment, the decorative element comprising a main body and a lighting portion, and a light source in said lighting portion, wherein, in the lighting portion, the outer face is arranged such that the light from the light source is not visible through said outer face and the inner face is arranged such that the light from the light source is visible through said inner face, the lighting portion being movable relative to the main body between an off position, wherein the inner face of the lighting portion is turned towards the external surface and the light from the light source is not visible from the interior of the vehicle compartment, and at least one on position, wherein the inner face of the lighting portion is moved away from the external surface such that the light from the light source is diffused in the vehicle compartment, wherein the lighting portion is movable in rotation relative to the main body around an axis of the decorative element along which said decorative element extends, characterized in that the inner face of the lighting portion extends in the continuity of the inner face of the main body in the off position and being turned by a rotation angle relative to the inner face of the main body in the on position, wherein the rotation angle is 180° in one on position such that the inner face of the lighting portion extends in the continuity of the outer face of the main body in said on position, wherein the decorative element is movable relative to the external surface between a locked position, wherein the inner face (6, 14, 16) of the decorative element is applied against the external surface and an unlocked position, wherein the inner face (6, 14, 16) of the decorative element is spaced from the external surface, and wherein the lighting portion is not movable to an on position in the locked position of the decorative element and is movable to an on position in the unlocked position of the decorative element, and wherein the decorative element is movable in rotation relative to the external surface around a rotation axis substantially perpendicular to the axis of the decorative element along which said decorative element extends and contained in the external surface between the locked position and the unlocked position. wherein the lighting portion is movable in rotation relative to the main body around an axis of the decorative element along which said decorative element extends, characterized in that the inner face of the lighting portion extends in the continuity of the inner face of the main body in the off position and being turned by a rotation angle relative to the inner face of the main body in the on position, wherein the rotation angle is 180° in one on position such that the inner face of the lighting portion extends in the continuity of the outer face of the main body in said on position, wherein the decorative element is movable relative to the external surface between a locked position, wherein the inner face (6, 14, 16) of the decorative element is applied against the external surface and an unlocked position, wherein the inner face (6, 14, 16) of the decorative element is spaced from the external surface, and wherein the lighting portion is not movable to an on position in the locked position of the decorative element and is movable to an on position in the unlocked position of the decorative element, and wherein the decorative element is movable in rotation relative to the external surface around a rotation axis substantially perpendicular to the axis of the decorative element along which said decorative element extends and contained in the external surface between the locked position and the unlocked position.