OS: presumably any
Version: 0.2.4
Commit/Build: 578a061

When there's a banner or sign (I first ran into the issue with the footpath banner, but I checked and it does work with the rct2 signs as well) outside the property, both text and colors are changeable, even the no-entry status on the banners.

• Reproducible in RCT2 vanilla (was unable to test)
• Specific to multiplayer

Steps to reproduce:

1. Enable Sandbox mode, place banner/sign, Disable Sandbox mode (or in case of vanilla, load attached savefile)
2. Right-click sign
3. Modify properties

Save game:
sign_demo.sv6