EDIT: the OP helped me and it now works as I want. I will post what I changed because I am sure (uhm, I hope) there are humans like me that does not understand coding well.
1) to customize icons, modify the filter.rb file where it says def icon_for_tab
2) to display tabs in safari order "remove :uid => tab.url," from filter.rb
This is in my opinion the best workflow for tabs and it works well with the "open safari tab in chrome and viceversa", which is useful if you do not use flash or just need chrome sometimes. Download now!