Numbers are black for alarms that take place at 'night.'

White for the others.

 

So long as you don't have a rare disorder that prevents you from hearing alarms in the dark, of course it will still work.

 

Hm, are you running anything that sets different profiles based on time of day? If not, I have no idea why the 'dark' alarms wouldn't work. Are you positive they were checked off in the list of alarms?

 

i noticed this ages ago, but after 6pm and before 6am, the clock is black, i noticed this because i use the clock widget,

as for your alarm not working, mine doesn't work if the phone is off for some reason (and i dont have any task killer installed before you ask)

 

The phone needs to be on for the alarm to function

 

i found the built in alarm clock very hit and miss, it just sometimes didnt work, alarm clock plus from the market, is very simple and has never let me down once....

admob..

 

I use the stock HTC alarm which is set for 0545 every weekday morning and so far I haven't been late to work. So seems to work fine for me.

BTW it also "black" as opposed to my weekend alarm which is "white" set for 0900.

 

I second this (no pun intended)...

The alarm went black and didn't go off..

Any ideas?

Phone was on, it was checked and activated. I can also read a 24 hour clock and know what day it is.