1. INTRODUCTION  
2. SELECTION OF GLOBULAR CLUSTERS FROM THE ACS FORNAX CLUSTER SURVEY  
3. RESULTS  
3.1. KMM Fitting Procedure  
3.2. Measured Slopes for Various Subsamples  
3.3. A Luminosity/Mass Threshold for the Blue Tilt  
3.4. Evidence for a Red Tilt?  
4. DISCUSSION  
4.1. Constraints on Self-Enrichment Scenarios  
4.2. Color Effects from Dynamical Evolution  
5. CONCLUSIONS