Changing Text Color Removes Text

Hello,

Why does editing the text color in the visual editor remove some text?
Here’s an example:

http://wip.dvmobiweb.com.s181553.gridserver.com/wp-content/uploads/2014/05/Example.png

ChemTx Snapshots, Our Specialties, and Client Testimonials were all changed to blue with the WordPress editor’s text color picker, but Client Testimonials was erased.
If I go back to black text, the words reappear.
The same thing happened in the “Partners & Clients” text next to the testimonials:

http://wip.dvmobiweb.com.s181553.gridserver.com/wp-content/uploads/2014/05/Partners-Clients.png

Thanks!