Change text colors to reflect their state

The editor's text color suffered from two conflicting
problems
1) It didn't all pass GAR
2) The difference between hint text and regular text
 is too subtle to differentiate at a glance

Changes
1) Once a LabeledEditorView is non-empty, the text color of
 the spinner should no longer be the hint text color
2) Once an editor field is focused, all fields in the same
 EditKindSection get a slightly darker color. Since the various
 name editors, don't actually belong to a EditKindSection
 extra work needed to be done for them.
3) Drop down lists use non hint colors

Read only editor continues to use the darker hint color.
There is no need to strongly distinquish hint colors from
non hint colors in the read only editor.

Bug: 18004959
Change-Id: Ia6b16ab882b2fcb9113c2ac880e741f62115a1f9