The people who post in color are VIP s. They work on the show. Be nice to them so that they continue to come back often. Unless you are a VIP you will not be able to post in color. Be aware of time zone and international differences.
Spoilers are posts that talk about new or upcoming episodes.
The point is not to ruin the show for others by telling them information, whether it is rumored or not, in advance of an episode. It is a sure way to be ignored. Do not abuse other users here. Patience is important. This is not a chat room.