Css toolbar button


I’m trying to change the css of my toolbar.
When I click on one button, the color is ok but I want to keep the blue color when my mouse moves outside the button. (for the moment the background changes with the grey color).

Code Snippet (webix.com)
Any ideas ?

Sorry bad link fir the snippet


Could you please specify which colour exactly you want to keep (preferably with a screenshot)? I’m not sure that it’s fully clear for me which “blue” you mean, since there are light blue and dark blue being used in your example.