I've had some commenters tell me this before, and now I'm having the same problem. When I comment on a post, the comment box is a dark gray, and the text is either very slightly lighter or black (depending on the template, I've noticed this on others' blogs as well). Either way, I can't see what I'm typing.
For ME, this problem just started today. Before that, the text was white, and I haven't made any changes to my blog or computer.
Thanks for any help.
The blog I need help with is thedailyclick.wordpress.com.