I experimented with Windows 8.1 and Big Muscle glass to see if the taskbar can be matched up somewhat better.
Here is an old link to Big Muscle Glass with its download link: 

https://www.reddit.com/r/Windows10/comments/3gpan0/link_aero_glass_with_gaussian_blur_for_build/

Every glass feature was working until I installed big Win8.1 upgrades a couple of days ago.
Now I only get the blur on menu, taskbar and window borders. The reflection and special caption buttons and white borders don't work anymore.:(
Microsoft must be cracking down on 3rd party glass software?

Anyway,
in the Windows 8 "Personalization/Color and Appearance", the "Color intensity" slider can balance the menu/taskar color,
but it's a pain adjusting it with each wallpaper.
"Automatic Color" works better for matching the menu/taskbar about 50% of the time. 
Even though it gives a milky appearance, I think it's still the best option to use.


In Win8 CSM settings, I set to Win 10 option. I used the latest WIN7LIKE revB4 or WIN7LIKE COMBO revE skins.

There are no separate opacity options for the menu and taskbar when using glass. 
The menu glass color amount can be adjusted in the "Menu Look" tab, but there is nothing for the taskbar when using glass.
It's weird that to get the glass taskbar, one has to pick the the "Opaque option".

I found one way to turn down the color intensity on the always intense colored taskbar.
By increasing the alpha channel on the taskbar image, the taskbar will get darker and reduce the color amount.
The only problem with that is the taskbar becomes more opaque than the menu. Have to live with it. :( 
 
I included some simple Win8 taskbar images for different color intensity skin option settings.
In most cases it's best to set Windows 8 color settings to Automatic color.
Each time you change a theme, reset to auto color and save.

The max option is good when setting a steady color in Windows 8 "Color and Appearance".
Adjust the "Color intensity" slider to what is in picture for good menu/taskbar matching. 
Then adjust the hue, saturation, and brightness to get what you want.





