You can obtain Glamorous Toolkit by manually loading the code.
Get the latest image and latest VM of Pharo 7.0 specific to your system
Execute the following code in the Playground of the Pharo 7.0 image (can take 10-20 minutes):
EpMonitor current disable. [ Metacello new baseline: 'GToolkit'; repository: 'github://feenkcom/gtoolkit/src'; load ] ensure: [ EpMonitor current enable ]. #GtWorld asClass open.
Executing the above code loads all code related to Glamorous Toolkit and the extra plugin for the Pharo virtual machine that enables glamorous rendering. It also opens a live document that provides a guided tour.