Hi everyone,
Just to update you guys -- we are currently working on new voices for LM

About the icons, there is actually an option where you can specify the icon sizes (small, medium, large, mixed, etc.), and you can also change the icon colors (either set a specific color, or make it randomized) -- the icon color option is available only for certain icon sets (like the Basic Shapes set).
You may find more information about the icon settings in the LM Manual:
- Number Preset Settings > How to Change Number Display Settings > Icon Settings, OR
- Math Preset Settings > How to Change Math Display Settings > Icon Settings
Of course if you want to make changes for all your LM presets, then it's best to do this in the Override Settings feature!
You may also try using other icons (aside from the ones that come with LM by default) -- you can either download icon sets from the LM Downloads Library here, or you can use your own pictures
I hope this helps!