The brown is 25g lighter than the black. That's quite a difference in the Mechanical Keyboard world.
Instantly Bannable Offenses
These can be one-time bannable offenses for which you will not get a warning.
1. Insults. Direct personal insult of another forum member (e.g., "You are an idiot.") and other name-calling. Why? Because this isn't grade school. People should be able to discuss or even dispute other's posts without insulting people. You may dispute somebody's opinion but not attack/flame the person who stated it. There are a lot of other non-direct-personal insults that won't necessarily get you banned instantly, but depending on the context/nature may lead to post editing, post deletion, warnings, or time-outs. They include telling people to shut up and being extremely or repeatedly rude or sarcastic. Bottom line -- don't try to tick off others and don't make discussions unnecessarily personal. If somebody else insults you, report their post; their post does not give you a license to break the rules by returning their insults. Although we do not read Private Messages sent between forum members, the rules for appropriate and inappropriate content apply to them as well.
2. Harassment. Purposely intimidating a particular member, harassing them, sending them rude or unwanted private messages, etc. This includes personal attacks on moderators for doing their jobs.
3. Registration rules. Violation of the rules you agreed to when registering for the site: that you will not post any messages that are obscene, vulgar, sexually-oriented, hateful, threatening, or otherwise violative of any laws.
4. Multiple registration. You may register only one account, and if you were banned or given a temporary forum time-out, you may not re-register. Reinstatement can come only from an administrator.
5. Hoaxes. Purposely misleading other members to their detriment. Giving advice you know to be incorrect or harmful. Sensationalism.6. "Trolling". Do not post in order to anger other members or intentionally cause negative reactions. For a given post, this can be a subjective call, but a pattern of such posting or an especially egregious case will get you banned.