You can checkout the old logo at http://sitespeed.io (that blue color that is used on the site, is the one I want), but I'm open for new colours also. I want a new look and feel of the font and I want it to match the character.
One logo idea is a character (cartoonish and comical/fun) that can be a snake with glasses, an owl, another animal or something 1950-1960's high tech things, or something that symbols that the tool examine websites.
The tool uses read/yellow & green to highlight if something is good or not, maybe those colours could be used in the font or as a red/yellow/green light stop light.
The name can either be written on one line: sitespeed.io or splitted into two lines:
There should be no capital letters in the name.
Extra bonus: If you create images/versions that will work as favicon, apple touch icons and twitter images, meaning one version that have the same width and height (it doesn't have to be the same as the logo but maybe one part of it or so).