5 Spirits, 100 options each. 100^5 arrangements, 10,000,000,000.
You guess A on Spirit 1, and are told Green. 4 Spirits, 100 options each, 100^4 arrangements left. 100,000,000 reduction by 9,900,000,000, or 99.0%.
You guess A on Spirit 1, and are told Yellow. A=99 options, one of the others 1 option, the other 3 100 options. 99 * 4(100^3) = 398,000,000 reduction by 9,602,000,000, or 96.0%.
You guess A on Spirit 1, and are told Red. 5 Spirits, 99 options each. 99^5 arrangements left. 9,509,900,499 reduction by 491,000,000 or 4.9%.
Yes, usefulness of yellow vs. red goes up with more options. But, at what point did they cross over. We're not dealing with 100 options, we're dealing with 7.
5 Spirits, 7 options each. 7^5 arrangements, 16,807.
You guess A on Spirit 1, are told Green. 4 Spirits, 7 options each. 7^4 arrangements left. 2,401 reduction by 14406 or 85.7%.
You guess A on Spirit 1, are told Yellow. A=6 options, one of the others 1 option, the other 3 7 options. 6 * 4(7^3) = 8,232 reduction by 8,575 or 51.0%.
You guess A on Spirit 1, are told Red. 5 Spirits, 6 options each. 6^5 arrangements left. 7,776 reduction by 9,031 or 53.7%
With 7 options, taken on it's own, a Red is slightly more helpful than a Yellow.