https://en.wikipedia.org/wiki/Misumena_vatia Misumena vatia are usually yellow or white or a pattern of these two colors. They may also present with pale green or pink instead of yellow, again, in a pattern with white. They have the ability to change between these colors based on their surroundings through the molting process. Misumena vatia is highly sexually dimorphic. Females are larger than males and tend to fall between 6–9 mm in length. Males, on the other hand, are only 3–4 mm long. The female's legs are white or yellow, while the male's first and second legs are brown or red and the third and fourth are yellow.