I believe that there are style materials only for craftable styles. But if you want, you can check it using the simple script:
Lua Code:
for itemId = 1, 70000 do --70000 should be enough
local itemLink = "|H1:item:" .. itemId .. ":30:1:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0|h|h"
if GetItemLinkItemType(itemLink) == ITEMTYPE_STYLE_MATERIAL then
d(itemLink)
end
end