Update src/style/button.styl

fix color for select options for issue #63
contributors
component install `adobe/topcoat` >> `topcoat/topcoat`
repo: "adobe/topcoat" >> "topcoat/topcoat"
repo: 'adobe/topcoat' >> 'topcoat/topcoat'
Merge pull request #75 from noformnocontent/patch-3

repo: 'adobe/topcoat' >> 'topcoat/topcoat'
Merge pull request #74 from noformnocontent/patch-2

repo: "adobe/topcoat" >> "topcoat/topcoat"
Merge pull request #73 from noformnocontent/patch-1

component install `adobe/topcoat` >> `topcoat/topcoat`
Merge pull request #66 from jrowny/patch-1

Update src/style/button.styl
Fixed, inconsistencies based on Andrew Simpson's feedback

+ Text inputs now have the same border color as the buttons.
+ inner shadows are now at 12% for the light style as opposed to 15%
Merge branch 'master' of github.com:topcoat/topcoat
Merge branch 'master' into gitignore