He needs to delete and reinstall Toribash because his torishop.txt file is missing crucial data needed to show other colors in the torishop.
Or:
Open torishop.cfg
change
#Automatically generated from Setup. Don't edit
newshopitem "
0"
To
#Automatically generated from Setup. Don't edit
newshopitem "
1"
That should update any missing items from the toribash.txt file
