Nameless traveling nano: Day 7

My Palm PRE's camera lets me track each nano's progress, and I take these photos at the end of my "Painting Day," which is often quite late at night.

How do I select each color?  I have more than 100 colors to choose from on my palette, and, as with most nanoscapes with apparently random color choices, there is one rule: identical colors are never, ever next to one another.  I am using my trusty Daniel Smith Autograph Series 44 Kolinsky Sable Round #2 -- a very small brush that holds a lot of color.

Day 6

Day 7