Looking for suggestions...
I'm an Xfce (4.12) user and I'm looking for a new Desktop theme(s) for xfwm & GTK 2/3.
I've found a suitable one for xfwm called OneColor (see screenshot) but it doesn't have corresponding themes for GTK 2 & 3. Ideally I want:
* wider frame for easy grabbing
* different window focus colour
* simple min/max/close buttons
I know this is expecting a bit much, but if you don't ask you don't get. 😜
Tell you what, you sure can waste a lot of time with Desktop & window manager themes. Unless you can pick a theme (including icons) off-the-shelf, all the fiddling just eats up time.
I'm going to use Arc-Theme. It is quite old, but does provide theme elements for GTK2, GTK3 and xfwm4. It doesn't provide different colours for active/inactive, but again I can make my own by mixing/matching the light & dark variants of the theme.
I mentioned earlier that the use of some themes results in a slight system slowdown. Not a huge difference, just a hesitation that becomes annoying. My limited testing suggests the hesitation occurs with themes which use a lot of .xpm files. This is ironic as XPM is a format specifically designed for the X Window system. They are small text files which describe the colour to be used, a bit like a CSS declaration block.
The attached screenshot shows an example XPM file.