This person also got chicks with black dots from crossing a White Leghorn ( who is dominant white) to a RIR.   Though unlike RIWhites who are also dominant white, White Leghorns generally dont have silver genes. 
https://www.backyardchickens.com/forum/viewtopic.php?id=381028
	
		
			
		
		
	
				
			https://www.backyardchickens.com/forum/viewtopic.php?id=381028
			
				Last edited: 
			
		
	
								
								
								
								
									
	
		
			
		
		
	
	
	
		
			
		
		
	
								
							
							
	