I list the cocoa butter coloring as this "Less than 2% of cocoa butter coloring (blue 1&2, yellow 5&6, red 40, titanium dioxide.)" I just had this label approved a few months ago when I started at a new location. I did weigh a ton of molds before and after spraying and then after capping to ensure that my math was right. Each chocolate (CW2295 mold) contains a max of 1.36% of colored cocoa butter by weight. That is the entire weight of the cocoa butter, including the carrier cocoa butter. If I actually knew the proportions in Chef Rubber, etc then I could probably get away with the "less than 0.5%" labeling but better to be safe. I also have the colors listed in the smallest font size allowed to save space on the label. I do wish the chef rubber didn't use red 40 because a lot of people report sensitivity. The blues also seem to be an issue. I'm not a huge fan of the natural colors available but I am considering using them at least for the vegan bonbons I am testing.
For tracking single ingredients I have a spreadsheet on my computer where I enter all of my current ingredients. I add each lot number that uses those ingredients into the title. When I replace something with a new package I duplicate the document and add in the new package serial number or whatever. Then I track the lot numbers on my website by changing the barcodes each time I switch out ingredients. It's ridiculous and takes way too much time but beyond saving labels and taking photos I haven't come up with another system. I keep the spreadsheets, inclusion cards, and back labels in separate folders for each month on my computer. Not sure what will happen when I run out of storage space. There are a bunch of options for software available but I couldn't justify the price. Fillet is good for pricing though.