Can you tell me who's talking...
...and what is she trying to tell us?
Hint 1:
No maths needed
Hint 2:
After the "dirty job" made by Gareth, the solution of this puzzle should be really close
Hint 3 (giveaway):
What really count are the names of the colours (try play with them...)
Following the extremely helpful 'scutwork' of @GarethMcCaughan, and using Hint #3, the answer is:
Georgia O'Keeffe:
"I found I could say things with color and shapes that I couldn't say any other way - things I had no words for."
Explanation:
Taking the first letter of each color (or each word of the color) gives something like this:
I L GS N I AY AY A FO DS PR DS CO A T BB EU A I H EU N H N N Y DL AP L YO I B C T FF E D T NG WO I H OL ST N H S RD CO I OR H T ER I SF U N G AT S W H OR
You can pretty easily make out some words when read top-to-bottom, left-to-right, like THAT, a couple COULDs, and then ANY OTHER WAY THINGS I...WORDS FOR, which is of course part of her quote:
"I found I could say things with color and shapes that I couldn't say any other way - things I had no words for."
Final lists (Thanks @ChrisCudmore for the last one):
I L GS N I AY AY A FO DS W DS CO A T D U A I H U N H N N Y T AP L YO I O D T HC E D T NG WO I H OL ST N H S RD CO I OR H T ER I SF U N A AT S W H OR
Irresistible | Lilac | Green Sheen | Nickel | Isabelline | Arylide Yellow | Arylide Yellow | Asparagus
Fire Opal | Dark Salmon | Wine | Deep Saffron | Carrot Orange | Amethyst | Timberwolf | Drab
Ultramarine | Avocado | Independence | Heliotrope | Ultramarine | Nickel | Honeydew | Nyanza
Nickel | Yellow | Taupe | Amaranth Pink | Liberty | Yellow Orange | Icterine | Oxblood
Desert | Tumbleweed | Hollywood Cerise | Eggshell | Denim | Thistle | Neon Green | Wild Orchid
Inchworm | Harlequin | Old Lace | Steel Teal | Nyanza | Harlequin | Skobeloff | Rose Dust
Cadmium Orange | Iris | Old Rose | Honeydew | Tangerine | English Red | Indigo | Spring Frost
Umber | Nyanza | Ao | Atomic Tangerine | Straw | White | Heliotrope | Orange-Red
Not really an answer but (too large to fit in a comment and) may save others some scutwork: OP says that "the lack of a text transcription is intentional" but if this puzzle is mostly about looking up RGB colours on the internet then that is No Fun and I'd like to save other people the bother.
Of course it may turn out that none of this has anything to do with the actual puzzle and I've saved people some pointless bother, but actually that's even better.
RGB triples:
B3 44 6C | C8 A2 C8 | 6E AE A1 | 72 74 72 | F4 F0 EC | E9 D6 6B | E9 D6 6B | 87 A9 6B E9 5C 4B | E9 96 7A | 72 2F 37 | FF 99 33 | ED 91 21 | 99 66 CC | DB D7 D2 | 96 71 17 3F 00 FF | 56 82 03 | 4C 51 6D | DF 73 FF | 3F 00 FF | 72 74 72 | F0 FF F0 | E9 FF DB 72 74 72 | FF FF 00 | 48 3C 32 | F1 9C BB | 54 5A A7 | FF AE 42 | FC F7 5E | 80 00 20 C1 9A 6B | DE AA 88 | F4 00 A1 | F0 EA D6 | 15 60 BD | D8 BF D8 | 39 FF 14 | D4 70 A2 B2 EC 5D | 3F FF 00 | FD F5 E6 | 5F 8A 8B | E9 FF DB | 3F FF 00 | 00 74 74 | 9E 5E 6F ED 87 2D | 5A 4F CF | C0 80 81 | F0 FF F0 | F2 85 00 | AB 4B 52 | 4B 00 82 | 87 FF 2A 63 51 47 | E9 FF DB | 00 80 00 | FF 99 66 | E4 D9 6F | FF FF FF | DF 73 FF | FF 68 1F
Names, according to Some Website Or Other:
Irresistible | Lilac | Green Sheen | Nickel | Isabelline | Arylide yellow | Arylide yellow | Asparagus
Fire opal | Darksalmon | Puce red | Deep saffron | Carrot orange | Amethyst | Timberwolf | Bistre brown
Electric ultramarine | Avocado | Independence | Heliotrope | Electric ultramarine | Nickel | Honeydew | Nyanza
Nickel | Yellow | Dark lava | Amaranth pink | Liberty | Yellow Orange | Icterine | Burgundy
Camel | Tumbleweed | Fashion fuchsia | Eggshell | Denim | Thistle | Neon green | Wild orchid
Inchworm | Harlequin | Oldlace | Steel Teal | Nyanza | Harlequin | Skobeloff | Rose Dust
Cadmium orange | Iris | Old rose | Honeydew | Tangerine | English red | Indigo | Spring Frost
Umber | Nyanza | Green | Atomic tangerine | Straw | White | Heliotrope | Orange-red
Nothing leaps out at me on looking at any of the above, but I haven't looked very hard.
