native mobile text field alpha vs. dark mode vs. clear control

[Mike Kerner]

oh, this is fun:
create a native mobile text field
set the backgroundColor to 255,255,255,255 #or just set the alpha...
make sure the clearButtonMode is not "never" (because otherwise you
won't ever see this issue)
make sure your mobe is set to light mode
you should see the clear button.
now set your mobe to dark mode
switch back to the app
the clear button is invisible. it's still there, you just can't see it.
now switch the alpha on the field: set the backgroundColor to 255,255,255,0
you can see the clear button
do the reverse: set the backgroundColor to 0,0,0,255
set the backgroundColor to 0,0,0,0

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