I will like to share that the Toolbar buttons are stored in firefox folder and they are in the "omni.jar" named file, what all you have to do is just go to the file and then open it and then zip it up and then just browse the folder. Just follow the below steps:
Go to chrome > browser > skin > clasics > browser, here you will get 2 files oolbar.png and toolbar-inverted.png respectively so now you will just have to copy toolbar.png into roolbar-inverted.png and after that you will get 2 files with different names.
After that just reboot and then open fire fox and then you will get the same toolbar as that of the Firefox 7.
Just check it out and then let me know if you have any further problem with the solution. I think that the above solution will probably solve the problem and you will not have any further issues. Best of luck
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