Your thinking about the wrong physical property. Read that link you posted yourself:
When temperature increases, electron mobility (how quickly current can flow though a medium,) and threshold voltage (when the transistor activates,) gets worse. Improved electron mobility means improved conductivity and improved threshold voltage means that the transistor voltage required to switch the transistor on drops but only is noticeable between two temperatures when the ΔT is relatively large. The benefit of the latter is that since any transistor takes time to switch between an on and off state, starting the transition earlier which leaves more time for the transistor to transition to whatever state it's going to. Pair this with a "more conductive" circuit and you have higher stable switching frequencies. However, if threshold voltage gets too low, the transistor will cold bug iirc.
So the question isn't if you'll overclock better between 60 and 70*C but rather what kind of clocks would be stable at 10*C compared to 60*C. If the OP really wants to get better overclocking, that means a bigger
ΔT between the CPU and the medium that keeps it cool. In order to seriously improve overclocking by taking advantage of physical properties and thermodynamics, you would need to have to work phase-change somewhere into the equation to pump heat out of the cooling system if this is to be a long term thing, which means nothing like DICE or LN2.
I apologize if I did a terrible job of explaining that, I've yet to have my coffee.
I'll leave this here though:
http://www.springer.com/cda/content...407478-c1.pdf?SGWID=0-0-45-1268751-p174130080
tl;dr: Yes but, you probably will only be able to get higher clocks due to temperature by adding phase change to the equation.