What you see in the:
UBBCentral - Style Downloads forum
UBBDev - CSS Styles (UBB.Threads v7) forum

Is about all of the existing "free" styles that I know of that are available, other than the several new ones that'll be in the UBB.threads v7.6.0 package (which you can see in the style selector at UBBDev and UBBCentral).

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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