I posted on the list, but thought I'd post here too..
Here's a Pd mod that I've been using. You can use color themes like in Pd-extended. There are also different inlets/outlets and cords for audio or messages.

I also put initbang and closebang back in
Unfortunately only tested/bundled on OS X
https://github.com/sebshader/pdnext/releases

I also updated tclpd which works with this bundle now
https://github.com/sebshader/tclpd/releases/tag/v0.4

here's an example theme
colors-plugin.tcl

@60hz right now the menu item just sets a tcl variable that is referenced whenever cords are drawn or moved.

it's a bit bigger than the planned scope of the bezier cables feature (it was a small feature just to take advantage of native tk bezier lines) and it didn't seem like that big of a deal for it to be the user's responsibility to redraw by minimizing or re-opening the canvas..

But, if there's an easy way to loop through open windows in tcl and send a redraw message to pd (or maybe just redraw the cords directly in tcl) I might put it in later

@60hz putting these lines in some .tcl file in the pd path (maybe even in the colors-plugin.tcl file..) will do the trick

proc redraw_cords {name, blank, op} {
    foreach wind [wm stackorder .] {
        if {[winfo class $wind] eq "PatchWindow"} {
            set canv ${wind}.c
            foreach record [$canv find withtag cord] {
                set tag [lindex [$canv gettags $record] 0]
                set coords [lreplace [$canv coords $tag] 2 end-2]
                ::pdtk_canvas::pdtk_coords {*}$coords $tag $canv
            }
        }
    }   
}

trace variable ::curve_cords w redraw_cords

@seb-harmonik-ar
Thats working perfectly in color-plugin.tcl! Thanks.

Another question regarding inlet/outlet: now the msg_cord color is corelated to iolet outline color.
In order to make even better themes do you think that it would be possible to have a separated outlet outline color? or be able to have no outline in iolet?

@60hz I've been thinking about that too.. thought it would be cool to have the cables always be the same color as the outline, and also to cut down on "option bloat"

but I might put it in just to have the option.. I probably won't compile/release again until the next major pd version tho.

@60hz ok I lied.. I decided to get it done now..
new release
https://github.com/sebshader/pdnext/releases/tag/0.51-2
it's msg_iolet_border and signal_iolet_border

@seb-harmonik-ar great!
My theme is ready, less confusion between objects and messages boxes for students, and everything is readable

Here is the plugin : colors-plugin.tcl

I would love to use it on linux!!

@jcorrea because each distro packages apps differently I didn't bother making any linux packages. However compiling from the latest master git sources should work fine, and I've successfully built and installed it on arch linux

btw there have been a few more issues I found over the last month on osx with the version of wish I was compiling and packaging (gui slugishness, permissions issues). Everything should be fixed on the 0.51-2 release page now though.

@seb-harmonik.ar Thanks for your kind and fast reply. I will try to compile and let you know how it goes.

updated to 0.51-3 https://github.com/sebshader/pdnext/releases/tag/0.51-3
used updated (fixed) tk with no-scrollbar and disabled-help-menu-items fixes on osx, in addition to the font and permissions fixes from pd 0.51-3 (and the new expr functions)