[Request] Bigger, more visible, more recognizable Icons

[aphaits]

Currently the icons feel inconsistent and blends too much to the interface, hard to differentiate between one another.
Also suggest to make icon bigger and stylized, preferably with more contrast color.
But in general the icons themselves are sometimes very weird in visual, such as using a "previous" symbol for "reset" and using disc imagery for copy and paste, or using printer icon, etc.