25thApril,
I would like to add to the useful information that US-Subs has provided: In the development of munitions items, tests are done to validate most steps of the stockpile to target sequence, and in the case of CBUs, the dispersion of the bomblets is tested through actual air drops. In these cases, along with drop tests of many other munitions, the orange paint greatly assists the high speed photography, and in the actual recovery of the dropped items, justifying the deviation from "normal" color coding. In some cases, even "live" and practice items with live spotting charges have been painted with high vis graphics, such as the orange you are asking about. Naturally, whenever possible, inert items are used extensively in testing. For air drops of live submunitions, there are only a few places (for example, specific impact areas at Hill, Eglin, and White Sands) where the USAF typically carries out this type of testing, to limit the safety and range maintenance issues--at least during the time I was involved. Taber