CZR for GCs that are hosted by galaxies of different stellar masses. We binned the sample into three mass bins. Top: pink circles show GCs for galaxies with stellar masses log(M_Host/M_⊙) < 10. These galaxies are the least massive ones in our sample and generally have blue, metal-poor GCs. Middle: coloured circles show GCs for host masses with 10 ≤ log(M_Host/M_⊙) < 11. This bin contains the most GCs and those sample the full range of colours and metallicities. Bottom: highest mass bin with log(M_Host/M_⊙) ≥ 11 containing GCs with a broad range of metallicities and colours, except for the most metal-poor ones. The grey dots and line give the full sample and the fit, respectively. The black dotted line shows the fit to the respective mass bin.