TypeFaster Typing Tutor

I like the program a lot and it's helping to be a faster typing but I have to ask why does the program white out the words and the end of the typing line. I find that really annoying and I feel that it just make it hard to type. I think that at some point you stop typing by just characters and just typing by words and having the words greyed out at the end make it hard to see the the word and and type it.

Just a thought.