Here's a basic line up of Hemingray product 133/133.4's dome types. From left to right a 133, next a "transition" dome 133.4 (as coined by my son Patrick), a traditional 133.4 and finally a new style 133.4. Forgive the washed out colors. Roger Poole and my son have tutored me in photographing colors. Alas, to no avail! They are lime with a long milk swirl, yellow green with amber, yellow green and lime. More 133/133.4 dome styles comin'!