Coloring Book coloring mediums testing video

There have been a few posts recently with people asking which is best for coloring in their coloring books.  So I thought I would throw this out here.  Sandy Allnock did a video testing multiple watercolor and marker mediums in a variety of coloring books. She showed how she tests them in her books.  I found it interesting and informative, so I thought I would share.

Link to Blog post with video imbeded