Hi Stephan,

Thank you for reaching out. Here is your solution:

1. Please go to Joomla Administrator > System Tab > Language Overrides > then select required language and add the changes accordingly prnt.sc/sAGQmWrZHM5H

For Language Constant reference

HELIX_ULTIMATE_DAY="Day"
HELIX_ULTIMATE_DAYS="Days"
HELIX_ULTIMATE_HOUR="Hour"
HELIX_ULTIMATE_HOURS="Hours"
HELIX_ULTIMATE_MINUTE="Minute"
HELIX_ULTIMATE_MINUTES="Minutes"
HELIX_ULTIMATE_SECOND="Second"
HELIX_ULTIMATE_SECONDS="Seconds"

2. Add custom css

   #coming-soon-countdown {
    color: #ff0a;
   }

Best regards.