Google Login and Gif Logo

Hello. I got 2 questions for my website. First is related to Google login. Uploaded the extention, but it doesn’t display anything. Can someone tell me how could I solve this issue? Second question is related to Gif Logo. Does someone know if it’s possible to display my website logo or icon in gif format. I mean I want it to change colors. I’m using OC 3.x Thanks in advance.