Those appear to be the same lenses I mentioned (same manufacturer) in the OP, just in a different colour. So I might as well get the cat ones rather than them. Thinking about it, it might be easier to get plain orange lens so I don't have to worry about them spinning....
Thanks for the suggestions, guys (I haven't found and plain orange circle lens, so it looks like I'll have to go for plain orange normal sized lens).
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