Another ColEm-Android release today. Version 2.9.7 adds tabbed Settings and two visual effects, vertical scanlines and raster:

https://play.google.com/store/apps/details?id=com.fms.colem.deluxe (full version)
https://play.google.com/store/apps/details?id=com.fms.colem (free version)

• Settings are now tabbed, for easier navigation.
  
• Added Emulation section to the Settings.
  
• Made "Scanline Effect" a list selector, to accommodate multiple effects.
  
• Added "Vertical Scanlines" option, for vertical scanlines found in old LCDs.
  
• Added "Raster Effect" option, for LCD-like raster simulation.
  
• Moved some options from Input and Video sections to General.
  
• Reordered Settings by importance.