Taskbar color is not any kind of indication of what operating system could be lol...
Because any operating system can be modified to change the color of anything to any color lol...
In the SYSTEM PROPERTIES you can see the operating system which is being used on that computer...
By the way...I always hated software whos compatibility SUCKS lol...
I mean it just sucks that a software can ONLY run on let's say...Windows 98 and Windows 2000 (just an example) and that it cannot run on NEWER operating system...that just sucks lmao!
That is the KEY reason why the software I make ALWAYS works on Windows 98 first edition AND NEWER.
Anyway there IS a way to transfer the software on the new computer,but the procedure is long and complicated so I am surely not gonna write the procedure here...(my posts are long enough even without that lol)...
So the most simple and the fastest way is to retrieve the key code and then redownload and reinstall the software and then just enter the key code (registration code)...
I on the other hand do not do it that way...,but I guess that's just me lol...