Given the following Content Type: Smartphone
Taxonomy Vocabulary: OS: Android / iOS / Windows / Blackberry
Taxonomy Vocabulary: Color: Red / Blue / White / Black / Yellow
OS and Color is a Taxonomy Vocabulary which is term referenced in the content type smartphone.
Now the question is:
How do you setup a view to display only the COLORS that are available for the Android OS? I do not care about what phone it is. Example of this contextual path would be: example.com/android-colors
That in effect would just give me a list of all available colors that androids are in. Since OS and color has no direct relation, you would have to create a view of smartphones then GROUP THEM BY color while the contextual filter grabs the %android% arguement via the path.
The problem with this is that there will be thousands of records since each result is unique since your querying the smartphone table. Distinct setting in the query dialog box does not apply since each result is technically not distinct.