Posted: 20/10/2013 at 09:04
Tony, if it's consistently warmer inside than outside, take them inside. Temperature dictates ripening. The theory behind bananas, etc, hastening ripening is that they exude ethylene gas which quickens the process.
Those bright red toms in the supermarket that are rock hard and immature inside have been picked green and gassed with ethylene gas. It ripens the skin but doesn't ripen the tom internally. Only time will do that.
As to the yellowish hue around the top of the toms, it will have nothing to do with cross pollination from the yellow variety in this growing season. Cross pollination only manifests in the next generation, the season in which any cross-pollinated seeds are planted.