Need lab color info in Camera Raw.

Question

I would like to be able to see lab color info in addition to the RGB numbers in ACR.  The ACR color correction sliders are lab in nature, and the lab numbers are easier for color correction than the RGB numbers.
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Answer 1

Thanks for the reply. No, I don't have a painting background, so your comments concerning  layered transitions are new to me, at least in the analytical.
I have a great deal of problems with color names. The huge array of oils, watercolors and such in an arts supply store with their fanciful names put me to rout! While I do explore the emotional side of camera work, knowing the numbers is equally important because of my long years in electrical engineering. I know, for instance, that the perception of a certain color is influenced by it's surrounds, sometimes profoundly. So, when I am looking at what appears to be a white reference, I want 120,120,120, or whatever the value is. I may not stay there, many times I don't but I know where things are headed.
I can't imagine that my D90 or D80, for that matter, cannot see aqua. That would mean all the cameras Nikon produces using the D90 sensor have this problem.
Did I see aqua? Back to nomenclature. What is aqua? Aqua means among other things water. Aquarius means water bearer.Here is one dictionary's set of definitions. Look at the Thesaurus. All those names are the same? Greenish blue is the same as bluish green?
http://www.thefreedictionary.com/aqua
I'll not likely ever be a painter. Painters, like musicians know these terms. Music is filled with them with plenty of overlaps. I can listen to a pice of music never heard before and get within one semitone of it on the piano first try. But I don't have perfect pitch. So I assume if I were to take up painting and devote the next 10,000 hrs or so to developing that skill, I may indeed recognize the subtle colors by name.
Aqua= greenish blue. Well, I thought cyan was greenish blue, but there is no equivalency between the two as applied in Photoshop.. For me anyway.
I've seen that blobiness myself, Tim. Next time I'll go deeper into it Thanks.
Jeff, if you are reading this and have gotten this far, let me say this about "experience" and "creditability"  First off, you know I have experience in software testing. Never in my work did I ever have someone prove his point by pulling rank. Never. Software people get pretty deep into the subject. I am certain that TK and others worked HSL over quite thoroughly. The Orange and the Purple sliders do give me a freedom to finesse as never before, and I revel in it. But if your folks are anything like the people I worked with, someone winds up keeping them honest and away from wishful thinking, which gets more and more necessary with which to deal as release approaches. My job was, besides the technical validation work like smoke test etc, was to also inform them when the emperor is losing his clothes.  What was nice about it is that we, the validation group, had the power to stop on a dime, and force a resolution. So I have no compunction in speaking up here.
Nor am I concerned about being vetted by you. It's not the first time I have been confronted by people here saying "Do you know who he is?" as if I should never dare to be so outspoken. My answer is yes, but do they know who I am?
One really can't know, and vetting all your responders takes way too much time and bandwidth. So, assume some experience and creditability is where the best in the world have always proceeded, like Einstein.
Lawrence