https://tctechcrunch2011.files.wordpress.com/2015/09/googlelogo_color_300x104dp.png
https://tctechcrunch2011.files.wordpress.com/2015/09/evolving_the_google_identity_-_articles_-_google_design.png
続き
http://jp.techcrunch.com/2015/09/02/20150901google-gets-a-new-logo/