How to change Kmenu button?
 

Sorry but I can't remember how to change it from the K gear that it comes with by default. How do I do this again?

Look for kmenu.png in /usr/share/icons/"your_icon_set"/16x16/apps/ where "your_icon_set " is the one you are currently using i.e. crystalsvg,kdeclassic...
You probably need to change it for all sizes 16x16, 22x22 and so on...

Thanks! That worked like a charm. :)