It is a little rude of you not to wait for me to answer before insisting that I can't. And it wouldn't hurt to be clear about what the problem is anyway. Color is extremely complicated, and most of the associations that make color perception conscious are not themselves conscious, so I personally certainly couldn't explain color to a blind man. But there's no problem there. And if someone did know enough about color to explain all the associations that it has, well, having associations explained to you isn't normally enough for you to make the same associations in the same way yourself, so perhaps it couldn't enable the blind man to imagine the color. But it's hard to say, and anyway, I don't know why he'd need to be able to imagine it to know what it was. I can say that when I've read articles about how echolocation works, and what sorts of things it reveals or conceals, I've felt like I know a tiny bit more about what it's like to be a bat than I did before reading the articles.