In Hueforge one important function is the Transmission Distance of your filament.THis test grid will help you determine the TD for each of your filaments.

Be sure to use a layer height of 0.08mm and 100% infill. 
Start with white filament then on layer 6 swap to the color you want to test. When the print is done look for the number where you can no longer see any color change, that will be your TD.

There are two test files included, start with 1-10. If you still see changes at 10 print the 11-20 test.