IDE Package: Eclipse Java EE IDE
IDE Version: Oxygen.3a Release (4.7.3a)
Relevant Plugins Installed: Eclipse Color Theme 1.0.0 Enhanced Class Decompiler 3.0.0

Steps to reproduce the issue:

1. Download Solarized Light color schema from http://www.eclipsecolorthemes.org/?view=empty&action=download&theme=1013&type=xml
2. Import it to DevStyle
3. Check the option : Theme Background
4. Apply
5. The Color Themes page screenshot: https://gyazo.com/ebf3a3f5e56fea3fb7a0fe7885191a00
6. Change to a different program’s window. (At my end I see the background color in the editor being reset right after hitting ‘Apply and Close’)
7. Change back to Eclipse, the background color will become to default color and can not change.
8. Editor screenshot after resetting to default color : https://gyazo.com/bc52491d6d058708439275b186544df3