hakank
Green is a good choice of colour, but as you mentioned you need to change the shade. The shade on PAF’s logo could be a good choice. And a light grey bg colour or white would be a good choice.
The font size can be a bit larger. The top header/ bg of your logo can be more lively. Probably you can use the same graphics but make it more lively and bright. You want the players to feel happier when they are on your site so that they take an action.
For the sub categories Casino – Names of the casinos, maybe you can make them all visible on the left navigation. That saves one click for the players.
All the best!