* Markers: Markers are a popular choice for coloring graphic novels because they are easy to use and come in a wide variety of colors.
* Colored pencils: Colored pencils are another popular choice for coloring graphic novels because they allow for more precise control over the colors and shading.
* Watercolors: Watercolors can be used to create beautiful, vibrant colors in graphic novels. However, they can be more difficult to control than markers or colored pencils.
* Acrylic paint: Acrylic paint is a versatile medium that can be used to create a variety of effects in graphic novels. However, it can be more difficult to work with than markers, colored pencils, or watercolors.
* Digital coloring: Digital coloring is a relatively new technique that allows artists to color graphic novels on a computer. This can provide more precise control over the colors and shading, and it can also be used to create special effects that would be difficult to achieve with traditional media.
The choice of medium for coloring a graphic novel depends on the artist's preferences and the desired effect.