Power, You have me really thinking now about those burns. About 20 years ago I had a co-worker with an injury on the top of his head similar to what you described that took weeks to heal and about two years later he too had a skin cancer problem on that spot, coincidence? I don't know, never thought much more about it until now.
You also have a good point about the lens color, I have used a gold colored lens for years and you are right about the visibility. Have you tried a Cobalt lens for gas welding? they are a bit pricey at around $40 so not many people will buy one for that reason but compared to most of someones tools this is quite cheap for what they will do. The visibility difference while gas welding is nothing short of amazing especially when welding aluminum.