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1 pt in first two (share and get money) and 0.2 in Copy. Though that seems wrong. The copy one I got from the internet so it probably didn't scale the value properly. It also looks like 1 pt.
why?

They seem very thin. Might be harder to read at certain conditions.

I think you're right. Google recommends at least 1.5 pt.

Thanks. I changed it and it looks better :).
(maybe apart from receive icon. I think I made that one too busy with too many details )

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