Kilt-Fabric - numbers for yarn-colors (color-system)?

[figheadair]

If my question is in the wrong part of the forum, I ask the moderators, to put it on the right place!

I´m a little bit confused with exact yarn-colors for my Kilt-Fabric and hope, somebody of the members here can enlighten me:

Is there an international color palette used for yarns? Something like RAL or PANTONE?

Where are numbers for yarn-colors to find, or has every weaver his own system?

Much as some have tried to persuade them to adopt a uniform set of shades that a industry standards, there is no such thing and each weaver has their own palette. What is perhaps more surprising in this day and age is the discrepancies even amongst a given weaver's standard colour range.