Do I have a civil case if:

If someone makes a false abd defanatirt statement of fact about you to other people, you may have a claim for defamation.  In cases like yours, where I assume that you have no actual monetary damages, one critical issue is likely to be whether the defamation (oral defamation is slander, written defamation is libel, with a few small differences) is considered defamation "per quod", a particular type of defamation (usually a false statement that naturally tends to damage your professional reputation).  If it is defamation per quod (not being a Colorado attorney I don't want to opine on whether your particular case is per quod or not), you can pursue your claim without having to show actual monetary damages; it it is not, you would have to show actual damages to recover anything.