Plaid Wool Jacket, Polka Dot Scarf (This is most probably too preppy for John, but I could see elements of it working for him. The vest and scarf and instead of the blazer take that pattern and put it on the pants.
Might be a bit bold for me to wear, but this really is a fun use of color! Tangerine blazer, blue gingham shirt, yellow pants, and a rainbow of a pocket square. This outfit just explodes with spring color!