[GeoffWessex]

I think he was a bit late to be considered 'a pioneer of colour photography'....... Kodachrome (having already been around for ten years in a more primitive form) was finally released in 1935, AgfaColor followed in 1936. Eggleston 'discovered' it in 1965. Even I was using colour in 1962, when I was 11 (not Kodachrome, of course - far too expensive). Now, I'm not saying that my early pictures would be worth a fortune, but mine were sharp, reasonably well exposed and developed, with some form of composition learned from my Art teacher.

Regarding 'Untitled' images (I think all of them).... imagine the scene.

"I'd like an Eggleston print, please, Mr Shopkeeper".
"Certainly sir, what's the name of the print you'd like?"
"Er - no idea, sorry, it's 'untitled', but it's a badly composed and developed picture of a sign on top of a shop."
"Oh yes, I know the one..... from 1973."

(and the shopkeeper's VAT inspector may have trouble understanding that fifteen items called 'Untitled' were sold, at wildly differing prices).