Buttons look old-fashioned

Dear Syed, dear Thomas

thank you for this superb plugin! My question: Is there any way to update the images of the buttons? They are not up to date anymore. Especially the google plus button is still in the old look and feel of google and this makes the entire page look dated.

Thanks again and best wishes,

Martin

https://ww.wp.xz.cn/plugins/floating-social-bar/