Parameters
The ID of the node to modify
Red component (0-1 range)
Green component (0-1 range)
Blue component (0-1 range)
Alpha/transparency component (0-1 range). Defaults to 1 (fully opaque)
Figma uses RGBA values in the 0-1 range, not 0-255. For example, pure red is
{r: 1, g: 0, b: 0}, not {r: 255, g: 0, b: 0}.