My guess is that if it is not named for some specific variety of tobacco, then all these "color" names (like yellow, bronze etc.) are just lingo used by whatever organisation is using them. It seems that tobacco names are used quite arbitrarily, and are not standardised in any way really.
Farm Products Grades and Sales Act
Loi sur le classement et la vente des produits agricoles
R.R.O. 1990, REGULATION 374
FLUE-CURED TOBACCO
Note: This Regulation was revoked on January 1, 2011. See: O. Reg. 387/10, ss. 1, 2.
Last amendment: O. Reg. 387/10.
This Regulation is made in English only.
1. In this Regulation,
“crude” means,
(a) hard, slick, extremely immature or firekilled, and
(b) black or green in colour;
“grader” means a grader appointed to grade tobacco;
“green tolerance”, when expressed as a figure, means the maximum percentage of a tobacco leaf that can be green in colour for the tobacco leaf to meet the requirements for the grade;
“injury” means damage that detracts from the appearance or usability of tobacco leaves, but does not include waste;
“maturity” means degree of ripeness;
“tobacco” means unmanufactured flue-cured tobacco produced in Ontario;
“uniformity”, when expressed as a figure, means the percentage of tobacco leaves that meet the minimum colour intensity, leaf structure, leaf development, maturity, width and length requirements for a particular grade;
“variegated” means mottled grey in colour;
“waste” means unusable due to excessive damage. R.R.O. 1990, Reg. 374, s. 1.
2. Tobacco is designated as a farm product. R.R.O. 1990, Reg. 374, s. 2.
3. No person shall,
(a) sell or deliver for sale to a first buyer thereof; or
(b) buy from the producer thereof,
tobacco unless a grader has graded it and it has been marked with a grade established by this Regulation. R.R.O. 1990, Reg. 374, s. 3.
4. Where tobacco is graded, the grader shall examine the tobacco in as many bales of a lot as are necessary to determine the grade of all the tobacco in the lot and shall have affixed to a bale a tag or label under the Act on which is legibly marked the grade of the tobacco. R.R.O. 1990, Reg. 374, s. 4.
5. (1) Tobacco does not qualify for a grade if it is damaged by mould after being cured, is damaged by smoke or soot at any time or contains bits of broken tobacco leaves and stems resulting from handling.
(2) Despite subsection (1), bits of broken tobacco leaves and stems free from foreign material may be graded as scrap and so marked. R.R.O. 1990, Reg. 374, s. 5.
6. The grade factors for tobacco leaves are plant position group, colour, colour intensity, leaf structure, leaf development, maturity, width, length, green tolerance, uniformity, injury and waste and crude. R.R.O. 1990, Reg. 374, s. 6.
7. The plant position groups for tobacco and the symbols therefor are,
(a) lugs (X), consisting of the leaves nearest the ground on a tobacco plant;
(b) cutters (C), consisting of the leaves above the lugs and below the cutter leaf;
(c) cutter leaf (H), consisting of the leaves in the mid to upper part of a tobacco plant;
(d) leaf (B), consisting of the leaves in the upper part of a tobacco plant; and
(e) tips (T), consisting of the leaves at the top of a tobacco plant. R.R.O. 1990, Reg. 374, s. 7.
8. The colour symbols in the grades for tobacco and the meaning of such symbols are,
(a) L, meaning lemon;
(b) O, meaning light to medium orange;
(c) M, meaning medium orange to mahogany;
(d) F, meaning dusky tan;
(e) R, meaning reddish;
(f) V, meaning that at least 20 per cent of the leaves are variegated;
(g) VL, meaning variegated lemon;
(h) VF, meaning variegated dusky tan;
(i) A, meaning green on the butt of a leaf;
(j) G, meaning lemon to light orange to medium orange to mahogany to dusky tan with green on the lamina of a leaf;
(k) GL, meaning lemon to light orange to medium orange with green on parts of the leaf other than the butt;
(l) GF, meaning medium orange to mahogany to dusky tan with green on parts of the leaf other than the butt;
(m) K, meaning that at least 50 per cent of the leaves are grey; and
(n) CR, meaning cherry red. R.R.O. 1990, Reg. 374, s. 8.
9. The colour intensity classifications for tobacco are,
(a) deep;
(b) strong;
(c) moderate;
(d) weak; and
(e) pale. R.R.O. 1990, Reg. 374, s. 9.
10. The leaf structure classifications for tobacco are,
(a) open;
(b) firm;
(c) close;
(d) tight; and
(e) slick. R.R.O. 1990, Reg. 374, s. 10.
11. The leaf development classifications for tobacco of each plant position group are,
(a) fleshy;
(b) medium fleshy;
(c) medium;
(d) thin; and
(e) skinny. R.R.O. 1990, Reg. 374, s. 11.
12. The maturity classifications for tobacco are,
(a) very ripe;
(b) ripe;
(c) medium mature;
(d) slightly immature; and
(e) immature. R.R.O. 1990, Reg. 374, s. 12.
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