Sure, I can. The only thing is that the rest of the sock -- hopefully -- will be kind of worn out
I made a few first pairs with just a bit of room to grow and they did last for over a year. But I then I decided that -- like you said -- I can just make them longer, and now I knit them to fit. Funny thing, the moment I decided that, I started finishing them with a few yards of yarn to spare
But toes can be any colour, right?