Script Report lost link when adding formatter

Hi,
I’ve customized one of my script (Script Report, standard=True) to add color when a certain condition is met. It’s working fine, but all of my field ‘Link’ are now text ie nothing happens when I click on them. Is there a way to have them back without having to re-code the href element for every Link I have?
Here’s what I have so far:

"formatter":function (value, row, column, data, default_formatter){
                if (column['content'] == "Fabrication Time"){
                        if (data['Fabrication Time'] > 20){
                             value = "<span style='color:red!important;font-weight:bold;'>" + value + "</span>";
                        }
                }
                if (column['content'] == "Printing Time"){
                        if (data['Printing Time'] > 20){
                             value = "<span style='color:orange!important;font-weight:bold;'>" + value + "</span>";
                        }
                }
                if (value == null){ //without this condition, it will print 'null' on the report
                        value = ""
                }
                return value;
        }

and here’s the column:


def get_columns(self, filters):
                columns = [_("Project") + ":Link/Project:250"]
                columns += [_("Project Name") + ":text:200"]
                columns += [_("Project Manager") + ":Link/User:150"]
                columns += [_("Status") + ":text:105"]
                columns += [_("SubType") + ":text:105"]
                columns += [_("Exp. Start Date") + ":date:90"]
                columns += [_("Deposit Date") + ":date:90"]
                columns += [_("Preflight") + ":text:225"]
                columns += [_("PDF Approval Date") + ":date:90"]
                columns += [_("Printing") + ":date:90"]
                columns += [_("Inspection") + ":date:90"]
                columns += [_("Preflight Time") + ":text:90"]
                columns += [_("Printing Time") + ":text:90"]
                columns += [_("Fabrication Time") + ":text:90"]
                columns += [_("Total Time") + ":text:90"]
                return columns