They install the same in 10 as they did in previous versions. The only problem is they are starting to phase out certain skinning options now so certain things just can't be changed. I've been running the Polar Ice Skin since FL 8 and even with the updated version for 9 I've noticed things not showing properly, or at all. I still use it, even in FL 10 simply because I just love the look of it. I just wish IL would embrace the whole skinning/customization rather than limit it like they have been doing.