The names of the colours are in english (at least for me they are!) Alternately, you can click on the bottles of dye =) They take you off to the images too =)
*edits* I just tried to open it in a different browser to see why you'd be having any trouble, and saw that it redirects to a different page (a "trial" page) While it was on the trial page, I just copied the original address in and hit enter again, and then it loaded on the second try for me, might need to do that =)
Sorry, in Opera it just went straight to the right page for me =)
*edits again* Oh, your edit beat my edit, but I didn't see it before I edited =P Hah! That's a lot of edits! =P