Gradient-lit dahlia form with chromatic spectrum distribution against dark background.

Digital composite rendering of a spherical floral structure employing gradient lighting techniques across visible spectrum zones. Blue wavelengths dominate left hemisphere; magenta and pink tones occupy right sector; purple gradients bridge transition areas. Petals exhibit directional striations indicating subsurface light scattering simulation. Central focal area demonstrates concentrated luminosity with reduced saturation. Shadows cast downward suggest overhead illumination source. Petal arrangement follows radial symmetry pattern with approximately 30-40 distinct segments.