styling issues (android)

here are some styling issues that appear to not work as expected in Android:

1) `placeholder_color` should be close to white in this example (and partially transparent): https://jasonbase.com/things/p88r

2) keyboard `email` does not seem to be implemented or working

3) images are (sometimes) not respecting width, either fixed or percentage. See the second image in https://jasonbase.com/things/X44Z

Start by reproducing the three Android cases from the JasonBase examples: placeholder_color, the email keyboard setting, and image widths. Trace each behavior through the Android styling and input or image-handling entry points, then verify that all three examples render with the expected color, keyboard, and dimensions.

Written by the indexing model from the issue text.