Space Patrol in colour. (1962) Ep.25. Explosion on the Sun. By Roberta Leigh 

"An explosion on the surface of Sun causes a temperature rise on Earth and Venus."
Colourised with Deoldify (setting 26) and PowerDirector10 (Lighting Adjustment 18)
The first episode in colour can be seen here:
• Space Patrol in colour...
This from Wiki:
Space Patrol is a British science-fiction television series featuring marionettes that was produced in 1962 and broadcast beginning in 1963. It was written and produced by Roberta Leigh in association with the Associated British Corporation.