Yes, the term single origin describes the origin of the coffee from which farm/area and not necessarily by roast level
That being said, let me share some things about origin
There are multiple ways coffee is bagged up and delivered to roasters and can vary the definition of "Single Origin" depending or individuals
Take note that even on a single farm/same farmer, it's possible for the farmer to try to plant a different varietal or apply pruning/fertilizers/etc to different trees on different parts of the farm
Hence:
1. Microlots - Same farm but only a subset of cherries from certain plot/trees/harvest/varietal of the farm. fun fact: Rubens Ghardelli wins Italian Brewers Cup using coffee from only a SINGLE TREE
2. Single Estate - Cherries from all over the farm but a single farm only (could be mixed varietals)
3. Single COOP - A Cooperative that group up the harvest of multiple smaller farmers
4. Single Country - Collection of coffee from all over the country - Typical for Brazil/Colombia (would you still consider this single origin?). Argument is a blend is usually a mixture of multiple countries and therefore a single origin should be single country?
5. Heirloom Varietal - Usually coffees from Ethiopia are Heirloom varietals - meaning natural mutation and wild coffee plants. Farmers don't even know which tree is which varietal. A single farm may have 10-15 varietals going on and nobody would know better!
Love to hear everyone's thoughts on this but in general, it's possible to see different colors in a single bag because of the above reasons except for microlots - smallest of smallest definition
Thanks for the clarification. This is the first time I've seen this many variety of beans being packed as a "single origin" (and different roast level as well?). 🤔