Purple potatoes get their distinctive color from the presence of anthocyanins, which are natural pigments that give them their vibrant purple hue.
Plants get their color from pigments such as chlorophyll (green), carotenoids (orange/yellow), and anthocyanins (red/purple). These pigments absorb and reflect different wavelengths of light, giving plants their distinctive colors.
Considering potato's are plants. I'd suppose it is the starch granules since they are specialized plastids for storing carbon hydrates.
The iris is the structure in the eye that gives it color. It is a thin, circular structure that controls the size of the pupil and regulates the amount of light that enters the eye. The amount of pigment in the iris determines the color of the eye.
Insects are attracted to flowers by color, scent, and nectar. Bright colors such as red, yellow, and purple are attractive to insects, as are sweet-smelling scents. The presence of nectar provides a food source for the insects.
Objects get their color from the way they absorb and reflect light. Different materials absorb and reflect different wavelengths of light, which our eyes perceive as color.
They contain the same antioxidants found in blueberries- anthocyanin which gives blueberries their blue color and purple potatoes their purple color. The color that anthocyanin takes is based upon the pH. A purple potato is a kind of potato that has purple skin and or flesh (sometimes called blue) with varieties being Purple Peruvian, Davis Purple, Eureka Purple, Fenton Blue, Purple Mountain, Blue Tomcat etc.
The traditional spice that gives paella its distinctive yellow color and flavor is saffron.
The specific factor that gives yellow cake its distinctive color is the presence of egg yolks in the batter.
Methane in the upper atmosphere.
Iron gives amethyst its purple color.
Potassium
Pink salt gets its distinctive pink color from the presence of trace minerals, particularly iron oxide, in the salt crystals.
Amethyst gets its purple color from trace amounts of iron impurities within the quartz crystal structure. These impurities create color centers in the crystal lattice that absorb light in the visible spectrum, resulting in the characteristic purple hue of amethyst.
Red beer gets its distinctive color from the addition of roasted malt during the brewing process. The roasted malt imparts a reddish hue to the beer, creating its unique color.
The pigment responsible for the purple color in a Rhoeo leaf is anthocyanin. Anthocyanin is a water-soluble pigment commonly found in plants that appear red, blue, or purple in color.
It can be, when it gives the color of an object (a maroon car). It can also be a noun for the color (I like maroon and purple).
Purple fireworks get their color from a combination of strontium (red) and copper (blue) compounds in the fireworks composition. When ignited, these elements emit light at specific wavelengths that combine to produce the color purple.