Let me clear up what molds are trying to achieve. I have them and opted for them because domes never stayed in place. I found that I was constantly pushing them back in even with the small plastic extension on them. Because the ear canal has an oily surface, the domes would tend to slide back a little and this changes the distance between the speaker and your eardrum, reducing the volume. Very annoying.

Molds hold the wires in place better because they conform to the shape of your ear. There are 2 types - rigid acrylic and soft flexible silicone. I found the latter to be excellent and consistent in delivering sound that doesn't change as I move or talk. The hard ones are IMO no better than domes. Microsonics makes the soft ones and you can get them in all crazy colors and patterns. They can also be clear. Be aware however that with time they will stain and become more opaque (see attached pic)

To order them you need your audi to make a casting of your ear and canal which is used to make the mold. It is important to get the same depth for each mold so the distance to the ear drum is the same. This might need to be tried more than once.

Hope this helps.