@7OH, please try the Winaero Skin 2.0 for Classic Shell:
http://winaero.com/blog/get-the-best-lo ... -skin-2-0/ With and without transparency. The installer will configure the values to match the taskbar at opaque and transparent settings.
The Winaero skin is more transparent than the default Windows 8 skin shipping in Classic Shell. But it is less transparent than what StartIsBack or Start8 have to preserve readability.
The Taskbar is overly transparent in Windows 8.1 causing readability problems at some lighter color shades. If we make a 1:1 match, this is how it looks: