Gen-2 Plasma Blue 2004

You'll need your system patched with UXThemePatcher. 

UltraUXThemePatcher:
www.syssel.net/hoefs/software_…

You'll also need 'StartIsBack' (check the 'SIB Settings' screenshots included in the zip, for theme specific settings in StartIsBack), to apply the start menu & taskbar style

as well as 'OldNewExplorer' for windows explorer to look exactly like it is in the screenshot. 

StartIsBack: 
www.startisback.com/

OldNewExplorer: 
www.msfn.org/board/topic/17037…

Installation:
a.Extract the contents of the 'Theme' folder & copy them to: 
C:\Windows\Resources\Themes 
b.From Personalization, select & apply the theme.

Additional:
Disable new addressbar & searchbox feature of Windows 10 1909:
Windows 10 1909 aka 19H2 features an addressbar & searchbox which is wider than any before.
To restore the old searchbox & addressbar, rename the file mach2.ee to mach2.exe inside the

'Disbale Enable 1909 New Search' folder, & run the 'Disable New Search.cmd' file to disable,

& alternatively run the 'Enable New Search.cmd' file as administrator to re-enable the new addressbar & searchbox.