The areas you pointed out are called 'Data Texts' They can be found within the World of Warcraft\Interface\AddOns\ElvUI\modules\datatexts folder. They are actually a part of the originial TukUI UI which has its own website and shares one with ElvUI, which is found at the link below:
http://www.tukui.org/blog/
Hope it helps ya some,
Wicked