This is a colourised animated gif of the title screen for ‘Zombies of the Stratosphere‘, which was a series that was made in 12 installments in the 1950s by Republic Studios.
Originally released in black and white, this colourised version was made for a TV re-broadcast in the 1990s.
The series also featured Leonard Nimoy playing a Martian!
Not really about Zombies at all, in fact there isn’t a single zombie in it. But still, great title.