I don't think the heat is going to be necessary. Would probably even make it too pliable.
Maybe warm it up just a little bit, then slowly push it into place. No, it won't mess up the paint, unless its more out of alignment than we can tell. Looks like a few degrees, max.
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R.I.P. Zawarudo, may you OC angels' wings in heaven.
If something appears too good to be true, it probably is.
Best R0ach Quote of all time : TLDR: Haswell might be the last legit gaming platform unless mice get their own non-USB interface on some newer architecture.