VistaStyleBuilder

I found a OS X visual style on DeviantArt, it's a nice theme, i tried it. When i open some application ( Mozilla ) it looks like this, on the taskbar :
http://postimg.org/image/3utkztq6x/

When i'm using my own OS X theme, it looks like this :
http://postimg.org/image/a1jlz2l5r/
How could i change the grey color into blue, like the other one ?
Thank you

Change the images at

Taskbar & System Tray > TaskBand > Basic > TaskBand > TaskItemButton
Taskbar & System Tray > TaskBand > Basic > TaskBand > UncombinedTaskItemLeft
Taskbar & System Tray > TaskBand > Basic > TaskBand > UncombinedTaskItemCenter
Taskbar & System Tray > TaskBand > Basic > TaskBand > UncombinedTaskItemRight

Thanks, job done. What about the fonts / colors / on same thing ?

Textcolor and font are at

Taskbar & System Tray > TaskBand > Basic > TaskBand

Thank you very much

Almost all this stuff is here

http://vistastylebuilder.com/forum/index.php?topic=1437.0

I saved the link, thanks
Offtopic : i was able to modify the close / restore / minimize buttons, but they looks somehow rounded, on the corners.
It's very difficult to modify them, to look 100 % square
Would you give me some tips how to do that, please ? Is it possible, at all ?
http://postimg.org/image/8l0xaytkv/2d6ff5e7/

If you'd upload the images, that would be very easy for me to do in Photoshop. Or for you to do yourself. You can either modify the originals or just make new ones. If you want to make sure your colors stay exact (if you make new ones), enable the 'Info' module in Photoshop (which will tell you which RGB values that your cursor hovers over in an open image), or use this cool little tool: http://activecolors.deviantart.com/art/Picolor-419675729

You just have to do a little basic graphic work on those buttons, mate. A little chop-chop-copy-paste action. Or make new ones.

I got your pm, downloaded the theme you linked, edited the images for you bud.    :)

Original buttons: (https://i.imgur.com/WLp5WA6.jpg)

So here's a preview and I'm including the modified .msstyle here as an attachment for you to download:

My edits: (https://i.imgur.com/Ks5gtTI.png)

They're not perfect, but I hope you are satisfied with them.  ;)
(I temporarily imported it (the vs) to 8.1, just to test bc I'm on 8.1, but I edited your msstyle with VSB 1.5)

If you downloaded this already, re-download it now. I made a slight adjustment to the bottom bevel of the minimize button...(the bottom bevel in the maximize button is more pronounced, but that's the way the original was)
 
If you need more help, I'm sorry but I'm about to leave my house to visit friends for a few days, so maybe someone else can help you further, mate. But you really need to try to do these types of things on your own; when people do it for you, like I did this time, you don't really learn anything. That's why you don't see too many people here doing these types of things for people, but rather sharing info. It's not because no one cares, but because everyone needs to learn from direct experience. I'm also still learning. I'm just a new little baby in theming. So---you bought the software. Now you have to set about scouring the tutorials here, looking at all the maps that 3am and others have posted, reading through other posts in the forum here, experimenting with things yourself, just like the rest of us.