opencart soladaz theme multilingual cancellation error category - menu

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Hello!
I must use this topic becouse is about so ladaz, i dont want create new topic for one question.

I use So Ladaz and need some changes of the main menu.
I ask you for help and want pay for that but you close ticket and i now work alone.
If you guys want tell me just one thing, where is css for main menu, i just want change li dropdown oen color from black to other color, blue or color from curent css blue, etc.
I check every folder and file with css and that color cant change.
Where is located that file?
If you want help, i want pay, not problem. Just help me.