Set Garmin default theme and try if you have highlited route, i have with Garmin default theme in FW 8.10 still pink highlited route.

Don't know if this was in 7.90 but today i see on FW 8.10, that if you have speed limit 130 in front of you and if you drive 110 only one time beep and then desapire alert and notification, if you drive 120/125 you have still one beep but you can see notification all the way to speed limit icone.