Everything starts with a good idea or a bug report. Someone asked for an app icon for claws mail (https://bugs.kde.org/show_bug.cgi?id=371914) and Jens Reuterberg make one. As I don’t think that every application need an breeze specific app icon, I’m look more for a consistent look of the applications so I made an claws breeze icon theme. You can download the icon pack from the claws webpage and dont’t forget to give me feedback cause I don’t use claws.
So if you think there is an application which need to be breezified, fill a bug report. This doesn’t mean I will fix it (in my spare time), but there is a chance.