In ancient times, groups of people banded together in geographical areas and formed villages. This trend expanded as populations grew, and unique cultures developed all over the world. Much of the cultural heritage of people came from the natural landscape around them, and this is often reflected in their arts. Those who grew up in tropical island nations developed themes that reflected the water and land, and many of their colors were centered on the fruits and vegetables that grew in their area.
There are colder countries that contain ice and snow for a good part of the year, and their arts are very different from their tropical cousins. While the ocean could still be a part of their art, it would reflect the darker colors that surround them. Fruits and vegetables in these areas would not be the neon bright colors found in the tropics, and this would affect their art choices as well. This is a large part of how cultural art develops.