Not sure how I got distracted by logos today, but I did. Bonnie and Corinne played a big part in the process. First inspiration came from Corinne, who keeps calling the paint head a flower. Then Bonnie mentioned if it had a logo, it should both look like a flower, and incorporate the shape of the paint head.
Based on their input, I started playing with ideas and the number 9 became a big part of it. Besides the obvious fact that the paint head has 9 modules, I also based a lot of the proportions on factors of 9. For example, the outer radius was measured at 36mm, while the inner circles had radii of 27mm, and 18mm. The width of the internal line is 9mm, and all sorts of other stuff. As it was progressing some other cools ideas emerged that I left in for people to discover in the future.
So if you are looking at the picture above, you can see where it began on the left, and where I ended up on the right. The final image is the logo that I think I am going to go with. Gonna think about it for a couple of days.