Change CSS for color patterns in Wordpress Template

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
What I need is simple: change the color code in my CSS stylesheet on Wordpress site

Currently, there is a GREEN color for the buttons on my website, while I would like it to have the following hex color code: 178fd4

I also need the navigation bar to be properly configured with another Wordpress site:

That is all

Skills required:
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