Theme colors problem after Joomla and T3 update (3.6.0 - 2.6.0)

Hi,
i'm working on my website with a t3-bs3-blank template, a copy edited by me, it worked very well until i made an upgrade to Joomla 3.6.0 and T3 2.6.0 version.
No i have problems with colors, it doesn't work and when i go to the theme tab (look at the image in attachment) i don't see the colors name but i see the path to the theme folder, for example:

c/server/htdocs/xampp/mywebsitefolder/templates/mytemplatefolder/less/themes/azure

In theme magic instead i see the color correctly and they work.
It's very strange, any solutions?

Thank you!