What does the 'A' stand for in the Material Design color swatch system? (e.g tealA200) [closed]

1. What is a color style?
2. What is primary color in material design?
3. What is primary and accent color?

What is a color style?

Color styles (known as layer styles in Sketch) allow for quick batch editing of colors within a document. At the most basic level, a color style could be created called “blue.” Anywhere that we want to use blue, we assign this color style.

What is primary color in material design?

A primary color is the color displayed most frequently across your app's screens and components. Your primary color can be used to make a color... A primary color is the color displayed most frequently across your app's screens and components.

What is primary and accent color?

Accent color

The primary color is still the dominant color but the secondary color is used in combination to draw attention.