Warboss Tae's 2016 Painting Challenge - Day 3

I spent the evening working on highlighting the robes of two night goblin units.  It doesn't look like much progress was made, but I feel like I did get quite a bit done.

Highlighting can be a bit time consuming, but I've decided it is worth the effort.  You can see the difference in the pictures below.  The model on the left has had the robes highlighted, while the right is just a wash over the grey dry-brush.

What do you think?  Is it worth the time to do the highlights?