I have but I haven't gotten a response yet. One important application is to advertise the site in a video intro for all guide videos created for the site. It would be for nothing short of helping the site get the word out. Important to that though is someone telling video creators it is okay and perhaps letting us know what fonts were used to create the logos. There is a huge untapped resource with youtube and site videos.
I wonder if they would mind it being changed to the site's new blue colors and being used around the net? I have tried to ask for permission to use the site logos from various people and it has gone without answer.