you need to pick the sky of your preference (missXX.mis.dml in the \MODS\t2skies folder), create a copy of the dml, and rename it into whatever the fan mission mis name is (example if the FM has thievery.mis, the dml would be thievery.mis.dml). you also need to delete the following from the dml:
then start a new game with the FM to see the changes.Code:FINGERPRINT { QVAR "origmis" == 1 }