Minimalistic, low-poly images have gotten more popular in recent years. But making these low-poly images by hand can be time intensive. For this reason, a lot of research has gone into how to triangulate an image (semi-)automatically. In previous works, only constant color and bilinear interpolation have been used to color the triangles in the triangulation. In this paper, different coloring methods have been investigated and showcased on a fixed mesh. They show some promising first results, but these methods can still be improved upon. When that happens, these coloring methods, combined with previous works on how to optimally triangulate, may result in more accurate or visually pleasing low-poly images.