Weapon stats

Hello guys,

I was wondering with the new changes due to the unlimited patch, does anyone have any clarification what these stats mean. I've looked at various weapons on the fm and they seem to have positive and negative values.



For an example on this posted picture, according to information from orangemushroom

Red = defense
Green = magic defense
Yellow = boss damage
Blue = ignore monster defense

My question is how these values work and do they actually go to negative values?

Thanks a bunch ahead of time for everyone's time