You could be right - and I am certainly not advocating a design that caters only to those with the time & desire to dig down deep - and I would agree that having a "standard" way with easily set prefs that can give some customization - and then providing the more advanced users with the tools/info to do their thing - is a great design ethic, absolutely.
I think what I was getting at is that even at that advanced level of using the css spy to identify elements and writing some replacement css - I was having a difficult time getting to one thing without touching others. I could be completely wrong and maybe I need to do more homework. But I'm definitely not new to doing this exact thing - I've implemented my same visual styles (I have 2 of my own) in Eclipse, Atom, even a desktop email client. I'm not saying I'm an expert, but my initial attempts to do this with Komodo have been a wee bit more frustrating than my other work. As another example of the menu issues, I've had some significant trouble getting the spy to identify for me a menu option which has children. Because the minute I click on it, the sub menu opens. I'm hoping this is just a matter of digging into the docs for the spy tool. But as of today - I have not managed to make simple dropdown menus look consistent and have one border.
I will try your suggestion, and I'm not going to stop working at it.
PS: I'm not going to make any excuse for my rather harsh tone, which I do regret not waiting until I wasn't as hotly frustrated. But when I decide to evaluate an app, I jump all in - and to be prevented from submitting additional questions while they were in my head, because of a forum rule - I would only ask to pardon my frustration coming through that way. I have retired twice in the past two years but just can't seem to push the keyboard away. And after 35 years and building 2 software firms and countless piles of software - I guess I need to be more concerned with my communication skills than whether or not I can make somebody else's software work the way I think it oughta. My apologies.