I am cautious to use the word 'theory', but as my idea makes a prediction about the Sun, I think that it may classify it as a theory; although I 'm not sure whether the specific prediction would be testable, as the difference in measurement would very small, but never the less, it is a prediction, and the theory may be testable in the same manner, using a different body, maybe Jupiter.
This the google page with my theory on it;
http://tofunut.googlepages.com/gravitationlengthdilationtheory
There is some stuff about black holes in relation to this at the bottom too.
All of which I probably have mentioned on other parts of BAUT.
ETA: I'm not so sure about how it applies to black holes, on more consideration; as I'm not sure what g would be at varying distances from the middle of the ball, but it still applies, I feel, just that the black hole may not look as big.
ETA2: (re: black holes) have added that maybe g, and time dilation level out towards the middle of the collapsing, sphere.