Hi Sonny,
happy new year of dragon!
1.) If you have already a gradiant setting in element or section, the colors are gone after update to 3.0.10
2.) Go now to the section, switch the gradiant to radial or linear and save
3.) Go back again and switch to linear/radial and save and it should be back in frontend
..
Anyway
The gradiant settings are opposite since 3.0.10
..
If you didnt use the gradiant settings at all and setup with Astroid 3.0.10 a gradiant background it works. But didnt works if you had already a gradiant and update to Astroid 3.0.10.
Regards Peter