For coloring this page, I suggest picking a combination of soft blues and greens to mimic the shimmering hues of the ocean. Start with a deep blue or teal to color the mermaid's skin and fishtail, contrasting the darker color with soft tan or light grey for her upper body and hair. For her necklace, use a pale yellow with purple highlights that match the pendant's shape and texture. Finally, for her ocean friends, use vibrant tones of teal, green, and purple that will give the ocean life a friendly, fun appearance. The result will create a stunning ocean scene with a charismatic mermaid as the center of attention.