Change background colour & button text

Howdy,

1) I would like to change the colour of this white box in the attached picture to #647caa if possible.
Page: http://m40.siteground.biz/~heartcor/sageheart.ca/events/
I can change the text to white easily once this is done via the plugin.

2) I would like to change the red button "tickets" to read "register"
Page: http://m40.siteground.biz/~heartcor/sageheart.ca/event/bodytalk-fundamentals-parksville-july-2015/?instance_id=5

Thanks in advance,
Casper