The internet is filled with red buttons and green buttons, but they don't always play well together. Kerry looks at the battle between red and green.
Primary vs Secondary button : r/UI_Design
Reduce the buttons, classify them concisely: Better Button System
Designing the Perfect Button - UX Magazine
Red does not always mean love in UX, by Eva Schicker
UX Dilemma: Red Button vs. Green Button — SitePoint
From a colourblind designer to the world: please stop using red
4 Rules for Intuitive UX. Improve your app's usability without a
UX Dilemma: Red Button vs. Green Button — SitePoint
Where to put the primary button?. Where do you place the primary