I have to counter your assertion there, speaking as a colourblind person. Having something like this, where one can see the RGB values, is immensely useful to someone wanting to paint a character in a specific colour that he is otherwise unable to see correctly. At present, my option is to take a colour that would seem to work, take a snippet of it, check it against a hex colour database and then try to apply it to the nearest match on the current grids. Using the labeled grids from the wiki does shorten the work a little, but it is still a long and drawn-out process for someone of my ilk.