Represents a color using red (R), green (G), and blue (B) components, with an optional alpha (A) component for transparency.
number | string
The optional alpha component of the color, representing transparency. It can be a number in the range [0, 1] or a string representation (e.g., “0.5”).
number
The blue component of the color.
number
The green component of the color.
number
The red component of the color.