If the mod is yellow, that means that the mod (or another mod it depends on [?]) was created using a different version of Morrowind than the one you are using. For example, the mod-maker only had Morrowind, and you have GOTY. [Okay, do I _finally_ have this right? Or does it have to do with what version of each of the master .esms you have (which patch, etc.?).] To fix a yellow mod, you can do a couple of things. The easiest would be to look over at the details box, where it lists the mods and game files this mod depends on. If they are all green or better, you can click on the yellow mod, click once inside the details box, say "okay" to the pop-up message, and press "Save." Fix all the mods until the box next to them is green.