16 Segment Blue
Featuring a LCD font in blizzard blue on a solid black background, this 3 hours and 30 minutes free online timer is great for the techies out there. Perfect for helping students stay focused in class or any time a little extra motivation would come in handy.
And if you need a timer in a duration other than 3:30:00, it's easy enough to change it to pretty much any time you want up to 24 hours.
VT323 Digital Timer - Unmellow Yellow
Digital Clock - Bright Green
Digital Clock - Red
VT323 Digital Timer - Radical Red
Digital Clock - Cyan
Unmellow Yellow Neon