Question about application icons (Waldorf)

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http://crunchbanglinux.org – I have noticed that if I change the icon theme using lxappearance some applications don't reflect this change while others do. For example, Iceweasel will use the theme's icon, as will abiword or gedit, but emacs and terminator will not. I have tried numerous themes, and checked to make sure there was an icon provided for the apps, and this same result occurs. I am curious about the strange inconsistency and wonder if perhaps there is a cause for it which may be addressable. It would be nice to be able to look at the panel and see the icons all consistent rather than contrasting styl (HowTos)