Bootstrap button class .btn-success fails 508 color contrast

[nickbristow]

The green "Sign Up for More Information" uses the .btn-success class from bootstrap which has,
background - #5cb85c
Text - white

This fails 508 color contrast at 2.48:1

The hover state has,
background - #47a447
Text - White

Which fails 508 at 3.15:1

Fix Suggestion
Override bootstrap class with new background colors
Normal state
Background - 387f38

Hover
Background - 2a632a

[konklone]

Ditto to #58.