reverse engineer bootstrap customization

[Intopophy]

When i started using bootstrap, I put in a bunch of colors and fonts into their Customize page, then downloaded what ends up being compiled css (from the less). i've since lost whatever changes i put in there, and they seem to be spread throughout the code. Since it doesn't actually include the less customizations in the download, there doesn't appear to be a way to get the values i changed back out (to upgrade)is there a utility out there that pulls the custom colors, fonts, sizes, etc out of bootstrap.css so i can reapply on a new version of bs? or better yet re-generate the less so i can keep it separate and compile new bs.css files as they bump versions