One of the most beautiful parts of the Captain Scarlet and The Mysterons television show were the lush paintings which set off the end titles. These were done by Ron Embleton, who was at the time also supplying the artwork for the Stingray comic strip. Embleton went on to also do some Captain Scarlet comics.
Embleton apparently preferred to work on expansive historical pieces like Wulf the Briton. Here's a link to an outstanding gallery of his work.
Eventually Embleton became the artist for Penthouse magazine on the exceedingly well crafted but exceedingly raunchy Oh,Wicked Wanda!. That's where I first discovered his name, and knew nothing of his connection to my boyhood favorite show Captain Scarlet.
Here are those lovely and exciting pieces of artwork which graced the end of every Captain Scarlet episode. All are by Embleton.