Hydrocodone - What is the difference between yellow and white hydrocodon?

How do a patient know he or she getting the proper dose of medicine for an example, Hydrocodne since they remove some of the Tylenol out of it. When I first started taken it, it was a large pink looking pill, now it very small not effective as it use to be really mess a good medicine up it doesn't take care of my pain anymore.

They make the yellow ones. Qualitest I think the manufacturer. These are much harder to get since Medicare only pays for the white Watson. I seem to have an allergic reaction to the new Watsons and had to get yellow pills. They cost me an additional .26 cents per pill.
Do they work better? My opion is they seem to stay in my system longer than the white ones. Work longer per pill. But nothing works like the older ones unless doctor gives you the stronger compounds. The re formulation of the long term hydrocodon DO NOT work the same but once your body adjust it will help the pain.