Add option to use default PA Hover colors

Add checkbox that enables or disables custom colors
for Hover notifications. This allows users to keep default
Hover colors as given by Paranoid Android team.

Signed-off-by: Shubhang Rathore <shubhang92@gmail.com>
Bump to version 1.5

Signed-off-by: Shubhang Rathore <shubhang92@gmail.com>