Use a "Meta Icon". Have that where you want to see what you described, and elsewhere - hidden - you make two others, the first being the buff, the second being the cooldown. Have those two (or the entire group) in the meta icon.
e.g.
Code:
^1^T^SType^Smeta ^SIcons^T ^N1^STMW:icon:1OJp6keVHfnA ^N2^STMW:icon:1OJp6keWdWql ^t^SEnabled^B ^SStates^T ^N1^T ^t^N3^T ^t^N4^T ^t^t^t^N82501^S~`~| ^Sicon^^
^1 ^T^SShowTimer^B ^SType^Sbuff ^SName^SAspect~`of~`the~`Turtle;~`Blessing~`of~`Protection ^SShowTimerTextnoOCC^B ^SShowTimerText^B ^SGUID^STMW:icon:1OJp6keVHfnA ^SStates^T ^N1^T ^t^N3^T ^t^N4^T ^t^t^SFakeHidden^B ^SEnabled^B ^t^N82501^S~`~| ^Sicon^^
^1 ^T^SShowTimer^B ^SType^Scooldown ^SName^SAspect~`of~`the~`Turtle ^SShowTimerTextnoOCC^B ^SEnabled^B ^SClockGCD^B ^SGUID^STMW:icon:1OJp6keWdWql ^SStates^T ^N1^T ^SAlpha^N0.85 ^t^N2^T ^SAlpha^N0.5 ^t^N3^T ^t^N4^T ^t^t^SFakeHidden^B ^t^N82501^S~`~| ^Sicon^^
That's my icon for Aspect of the Turtle/BoP, with Aspect cooldown if it's not up. You could import and edit that if you wish.
Picture reference: http://i.imgur.com/wDoUzly.jpg
Note: Pretty much all the junk you see there is hidden, and the "eye" icon of the meta turns into whatever is shown in the icons you put into it.