Where to begin.............I would not have added a pergola to an iconic MCM house!! An arched window doesn't make a Spanish style pergola mandatory. I would remove the pergola. Don't look at another Spanish style ANYTHING!!

We could black out the arched windows more easily if the plantation shutters inside were not white. This is a really beautiful home, but this color scheme is all wrong.

Lights like these are appropriate for your home.

If you want something more decorative then consider something like this