Smarkets Colours is a free Chrome add-on developed by Alex CS that aims to provide users with a consistent color scheme across different betting exchanges. Specifically, it changes the green and blue color scheme of Smarkets to the blue and pink color scheme seen in Betfair and Matchbook.

With Smarkets Colours, users can avoid confusion when switching between betting exchanges. The add-on modifies the color scheme of various UI elements, such as the buy and sell buttons, to the more conventional blue and pink color scheme. This ensures that users can enjoy ultimate familiarity and peace of mind while using multiple exchanges.

It's important to note that Smarkets Colours only changes the colors of UI elements and does not affect their position or function. Some green elements, which serve as the primary brand color of Smarkets, remain unaffected. These elements, such as the confirm trade button and the multiples switch, are universal and do not indicate the side of a trade.