All I can do is to post my last taskbar3 settings:
taskbariconsize 12
taskbarspacing 0
taskbarborder 7 4 2 2
taskbarbuttonborder 0
taskbarbuttonfontborder $taskbariconsize+6$ 2 0 0
taskbarskincenter taskbarcenter.png
taskbarskinleft taskbarleft.png
taskbarskinright taskbarright.png
taskbarnormalskincenter taskbarentrycenter.png
taskbarnormalskinleft taskbarentryleft.png
taskbarnormalskinright taskbarentryright.png
taskbaractiveskincenter taskbarselentrycenter.png
taskbaractiveskinleft taskbarentryleft.png
taskbaractiveskinright taskbarselentryright.png
taskbarflashingskincenter taskbarselentrycenter.png
taskbarflashingskinleft taskbarentryleft.png
taskbarflashingskinright taskbarselentryright.png
taskbarminimizedskincenter taskbarentrycenter.png
taskbarminimizedskinleft taskbarentryleft.png
taskbarminimizedskinright taskbarentryright.png
taskbarnormalfontcolor 8c8cae
taskbaractivefontcolor 000000
taskbarminimizedfontcolor 5b5b76
taskbarnormalfontface tahoma
taskbarnormalfontheight $taskbariconsize-1$
taskbarminimizedfontitalic
TaskbarUseFontShadow
taskbarflashingfontshadowcolor 808080
TaskbarActiveFontShadowColor 808080
taskbariconx 3
taskbaricony -2
NOTE: if no "skin" are defined for some state (normal, minimized, ... ) then, colors will be use; and I guess taskbarnormalfore "color" and taskbarnormalfore2 "color" is what you missed. If I'm right, I can tell you: "yes ! it's in the docs :)"