it seems the background color of the ios buttons in tabris is incorrect. On the picture below, the winter button is on the bottom yellow. The screenshot is from the ButtonControlsDemo. Is there a way to change this color ?
This effect is caused by the "caustic highlight color". Here is a good explanation: http://www.mlsite.net/blog/?p=235
Right now this works as intended. I'll put this on our issues list for improvements - but I can not guarantee a fix for the 1.0 release.