blue-violet

Yet the color is rare in nature—especially not in “a blue-violet hue resembling the color of electrical sparks,” which is how a research team described a new species of tarantula in southern Thailand.

Finally, the blue-violet light makes it very difficult to distinguish between different colors, Bullough says; everything becomes a shade of blue or black.

Most of that depends on the composition of the meteoroid itself: yellow comes from sodium, green from magnesium and blue-violet from calcium, all of which are common meteoroid ingredients.

The colors range from blue-violet and magenta to pinks and whites and, of course, dark purples, some of which resemble the burgundy hues of red wine.

What to look for: This low-growing plant has oblong, heart-shape leaves and blue-violet flowers that grow on a leafless stalk and that bloom from early spring into early summer.