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When I do that, mine are still the same. It must be something with your system. Not that I would know. I just know all computers run differently.

When I get on the forum, the new messages or those that have new posts show up in a dark blue, whereas the older ones or ones I've read show up in a lighter blue.
Is that what you're asking?

That's just something it always does. I usually go off the thread and then come back. Sometimes I post a message and then decide to edit it, but I can't unless I leave it and come back. Weird.