[Evolution] Display rounded corners on calendar entries

[Douglas Summers <ajgringo619 hotmail com>]

On my previous install of Linux Mint, I had gotten a gsettings command
that gave Evolution's calendar entries rounded corners (with a border,
I believe). But I'll be darned if I can find it (didn't show up in my
history or my archived mail from my previous list subscription).

Any ideas where I should look? I tried searching the list archives, but
came up empty.