fromBufferAttribute( attribute, index ) {

		this.r = attribute.getX( index );
		this.g = attribute.getY( index );
		this.b = attribute.getZ( index );

		return this;

	}
Sets the components of this color from the given buffer attribute.

@param {BufferAttribute} attribute - The buffer attribute holding color data.
@param {number} index - The index into the attribute.
@return {Color} A reference to this color.