Hi! 

1. The colour of the "Easy fps editor" is grey!

Maybe you could add the "night mode" to make it black? That's so trendy! 

2. Please add an option to use the editor in my own language, in this case Hungarian! Either with an external language file, or enable localization software to use the exe file. 

Then I can translate the program into my own languages, as well as the manual. Thank you! 

Adding editor themes isn't really a priority right now. I'd prefer to focus on getting the foundation stable before putting new paint on.  
Supporting external language files would be great though, and is much more likely to come before a dark theme.