This gorgeous coloring page features an array of beautiful owls in various shades of blue and purple, with a backdrop of heart shapes in the background. To bring out the intricate details of the owls and their surroundings, I would recommend using a variety of different shades and hues in the same color family. Use lighter shades of blue or purple for the background and add darker shadows to the owls themselves with plenty of mid-tones in between. Use different coloring effects to bring out the heart shapes in the background, such as soft colors and shading to bring out the 3D effect of the shapes. Finally, use metallic colors to highlight certain features, such as the eyes of the owls and the edges of the hearts. All in all, this is a creative and beautiful coloring page sure to leave your artwork looking truly awe-inspiring!