That doesn't work, manufacturers can use any color line with whatever colored chasers they want. Since there is a monetary incentive to cheat there is no agreed upon color coding as far as I know.
To know what you've got you need to test samples. I've looked into this and found 2 papers/sites dealing with identifying cordage.
One was in relation to identifying adulterated nylon. In the tug industry this is a serious issue since tow lines are carefully picked to deal with the intended load. Unscupulous line suppliers can reap a significant dividend using other cheaper fibers such as polyester or polypropylene. Because of the differing elasticities the aldulterated line is weaker despite what you might think from their relative strengths. The test this paper had was to boil some water
in a pan with black Ritt dye in it and soak a frayed end of the line (white obviously for this test) sample. Nylon fibers will absorb the color and most other artificial fibers won't. This only works for nylon.
The other info source used a burn test with observation of the burning fibers to determine what they were. There were some secondary tests that could also be used that were more involved. I'll try to refund my sources.
Sorry there doesn't seem to be a better way.
A house is but a boat so poorly built and so firmly run aground you would never try to refloat it.