#2 - Not in love with the colors. The orange is fine but the teal is not great. Also the icon is pretty cool but in the smaller version it looks fuzzy instead of the intended grid pattern. I do like what you did with the vn.
#8 - Nice vn icon. We like the gray but at the same time we would love to see more color. So maybe an orange and a dark blue? (not sure though since we don't know matching colors very well).
#21 - Thanks for these changes and we like what you have done in #21.
Also, for comparison purposes can you give us #21 in a new color palette? Whatever colors you want just something different for us to compare. Thank you very much!