looks nice bud, maybe add in shadows below the back and forward signs and stuff to make it look even nicer, and when you put the pointer over the back and forward arrow signs, to make them like buttons how they are supposed to come out a lil bit like the home sign and refresh sign, also, make the corners on the x's on the tabs a little more rounded, otherwise, looks great :)
The button icon does indeed looks like an early version of Firefox (but definitely not Firefox 1.X on Windows. Perhaps that on Linux?). But the size of icon looks weird and the button looks-and-feel remains that of Firefox 4+.
Odd I used the old Winstripe buttons from the original theme.Not sure what you are getting at.
*Edit* You seem to not understand that this theme has been modified over the years to using Fx default theme code. There is also a limited set of old winstripe images and the rest I had to make. Addons can effect the theme as well so you may want to look at what you have install as no one else has complained about how the theme looks.
There are other Winstripe themes available so if this one is not for you use something else.
Winstripe Classic is my favorite Firefox theme. I have seen that you've use the Firefox 0.9 icons. I really prefer the icons used in Firefox 1.2 (as used by the Winstripe Modernized 0.4 theme). Are you planning to stick with the 0.9 icons?