I'm not too OCD about hardware, only slightly. Gotta have a different colored bolt (preferably green) in the lower left corner on the front truck. Lucky kickflip marker.
I like the rest to be all black, and they have to be all Phillips, and preferably 1 inch.
I'm really only OCD about the one colored bolt (been doing it since I was young, just a habit that's stuck) and it being all Phillips (just cuz its always impossible to find someone with an allen key when you need one, but someone always seems to have a Phillips screwdriver laying around somewhere). The 1 inch and the rest being all black thing is what I prefer but I'm not gonna freak out if my hardware doesn't meet those two requirements.