dieyenVisibility is affected in low light but not a big deal. The black and white contrast will be clear in low light, and you've got light coming from your monitor or screen shining on it so I wouldn't be worried about it.
ViraYeah I mean as a kid I snuck into my office and managed to type on my computer in the dark with all the lights off at midnight, so I'm sure you'll be alright if you can touch type