I have been given a two tone green capsule and I have no way to find out if the capsule has a yellow dye in it. I am highly allergic to yellow dyes, and on your site you show a red/gray and a solid red capsule in 250/500 mg, do any of these have a yellow dye in them? I would appreciate any help on this... further information the two color green capsule I have is 500 mg and says LUPIN on the side of it. thanks