Final answer:
Vector graphics do not have a default background color. They are composed of mathematical equations and are resolution-independent.
Step-by-step explanation:
Vector graphics do not have a default background color. Unlike raster graphics, which are made up of pixels, vector graphics are composed of mathematical equations and are resolution-independent. This means that they can be scaled up or down without any loss of clarity or quality. Because vector graphics are defined by these equations, they do not inherently have a background color.