Can I set up a color gamut picker based on an ICC profile to insure fine art print color accuracy?

[KD11]

I'd like to know exactly how to use ICC profiles WHILE creating artwork in Adobe Illustrator and BEFORE sending out a file for fine art printing on Hahnemuhle paper, such as Photo Rag. I have the specific printer's ICC profile installed and am viewing my art using the Proof Colors with a customized Proof Setup set for that paper.

Now, how do I select colors EASILY to stay within that profile color gamut? Is it possible?

Also, I've watched videos of earlier versions of Illustrator in which the color picker displayed the colors within the gamut and colors out-of-gamut were grayed out, similar to a histrogram. Is this still a viewable option?

Thank you!

[KD11]

NOTE, I'm using Adobe RGB (1998) color setup and RGB settings because with giclee printing I have a wider printing gamut and most colors print wonderfully. However, I still need to be able to soft proof and create art that will print more accurately since some bright and highly saturated colors are out of the print gamut. 

[jdanek]

Stay within RGB color space.  There are essentially two settings in Illustrator > edit > color: Rendering Intent and Working Space. In Work Space, you have several RGB tags you can assign or apply to your file.  So, besides Adobe RGB, you can try ProPHOTO RGB.  You could setup a test file in each Work Space listed.  You can also use Perceptual Rendering Intent instead Relative Colorimetric or Absolute Colorimetric ( which one you could or may not have assigned ).  The main point here is that you will never match a monitor ( transmissive ) color in print ( reflective ).  So, try to have reasonable expectations as you progress through your experimentations to see what works best.

[KD11]

I will give that a test. Thank you!