Bug 1536114 - Update columnn breakpoint colors for debugger r=jlast

This is a clone of the original column breakpoints color patch. This time it was created with gecko-dev and branched off of autoland/branches/default/tip. Try: https://treeherder.mozilla.org/#/jobs?repo=try&revision=51348054bb53779bf6264f91be4d806adf22ff82

Differential Revision: https://phabricator.services.mozilla.com/D23796