What quality of sound would I like?
The easiest way to think about this is does your system require a little more warmth or more detail, more revealing?
Your answer will then indicate which colour family to choose.
What level of performance would you like within that quality of sound?
Generally, to some degree you can mix the colour families Blue and Black or Black and Silver. However, because Silver and Blue are so dissimilar in performance profile, these families should not be mixed in a system. When Tellurium Q develop their products, they are designed to fit as precisely as possible into one of these performance profiles… with only one exception in all the cables.
Understanding the Tellurium Q colours and Relative Performance