Trying out my new pens today and, ooo, those Tombow brush pens are so smooth to use. Very different from the scratchy extra fine colored pens I've been using. I can see why so many people like them!
The green metallic gel pen is almost too metallic to even see the green! I am using it as a shiny patina copper color which seems to work ok.
In this coloring book, I've really been using metallics as the neutral or background color. The ones you don't notice.

