I think this plugin would be a great addition to handle offensive/illegal sprays. It's also helpful to anyone just looking at the spray as it shows the SteamID of the person who sprayed it in case there is no admin present they can take a screenshot or record the SteamID of the offender.
Plugin: http://forums.alliedmods.net/showthread.php?t=75480
Screenshots:
Integration with the admin menu
Traced Spray with the punishment menu and glow effect showing
Hint message in DoD:S showing traced spray
Hint message in TF2 showing traced spray
HUD message in TF2 showing traced spray
Plugin: http://forums.alliedmods.net/showthread.php?t=75480
Screenshots:
Integration with the admin menu
Traced Spray with the punishment menu and glow effect showing
Hint message in DoD:S showing traced spray
Hint message in TF2 showing traced spray
HUD message in TF2 showing traced spray