This is a exciting and colorful coloring page of Tentacruel, a famous Pokemon. It has a dark blue color that almost looks black and a white belly. Its slim body is adorned with many tentacles coming out from the head and body and its large red eyes looking out expressively. To bring this page to life, I would color the mane and tentacles in shades of light blue and brighter blue for a unique and vibrant look. Tentacruel's red eyes could be given a somewhat fiery vibe by using bright oranges and yellows. For the original dark blue body and white belly, a darker and lighter shades of blue could be used for a subtle contrast. In the end, Tentacruel's tentacles could be given a 3d look with some shadow effects. All in all, this coloring page would be an exciting and creative project for any Pokemon fan.