wow, you've been working! Here's a small comparison of tests I did today, focusing only on the diffuse, translucency, and SSS parameters. The setup consists of an outer sphere 1 unit in diameter, an inner black sphere 1/2 unit in diameter, and a single ring light shining from beneath.

1: Diffuse set to a lime green color, translucency set to a value of 90%
2: Translucency changed to 5%
3: Inner sphere set to 90% size of outer sphere
4: translucency of outer sphere changed to 900%
5: Translucency changed from a value to a color, the same color as the diffuse
6: Diffuse color set to white (this gives a result similar to the first test)
7: Translucency set to blue
8: Inner sphere color changed to red
9: No diffuse setting used, translucency changed back to lime green, SSS enabled. The following is all set within the SSS's parameters- Tranlucency- 10%, Refraction Index- 30%, Intensity 100%.
10: SSS intensity changed to 20%
11: SSS translucency set to 90%
12: SSS intensity changed to 100%, inner sphere diffuse set to lime green.