Well Starz and Trace Latina are now both showing black screens and playing a single tone.
Both channels ended mid-song a little after midnight - just cut to black and tone, same as you're seeing now.
Last few mins on
Trace Latina
was Spice Girls - Viva Forever, then a junction announcing Late Night Latina was next, then one final song "Vete Pa La" by Lele Pons - cut to black was at the end of the song (not the actual end of the video, looked like a manual cut)
Last few mins on
Starz
was similar - "Breathe" by Blu Cantrell & Sean Paul, then ident and a programme ident for "Throwback Pop Anthems", final video was "Barbie Girl" by Aqua - cut to black near the end (I think)
And that was that...
It'll be interesting to see if the Latin hours on Urban uses the Trace Latin branding... The channel is still named and branded Trace Urban right now. Renaming to just Trace and branding hours based on content would work (so Trace and Trace Vault)