In: Settings | Live Countdown
I tried updating the time and text color and get an error message:
Warning: unserialize() expects parameter 1 to be string, array given in /home/mydomain.com/public_html/wp-content/plugins/live-countdown-timer/live-countdown-timer.php on line 167
It wasn't working so I stopped/restarted the plugin and I see that the colour change took, but the date etc reset to defaults.
I changed them and got the same error message although it it seems to be working on my site. Don't want to touch it now in case it breaks it again :)