Deleting option to change color in example pages.
Improving the doc where explain how change color of framework.
Merge pull request #977 from diegoeis/master

Minor fixes.
Calling CSS of page of errors. #929
Creating class to when layout without sidebar to adjust margin in desktop. #929
Adding thumb images to page examples. #929
Creating links in page examples. #929
Creating page of errors (500 and 404). #929
Creating CSS to page of errors. #929
Adding space.
Adjusting classes names. #929
Adding thumb image to examples page product not hired. #929
Creating link on page examples product not hired. #929
Creating page error examples (product not hired). #929