I managed to interpret a mmstyles file through a tool called "msstylesEditor" but I can't find where I can modify the values for the background and font color of the context menu.
Also if anyone could link me to some tutorials on how to make theme like those found on DeviantArt i'd be glad ! I couldn't find anything !
The background can be changed under Menu -> POPUPBACKGROUND. This is an image (1x1px). You have to export it, change its color, then replace the old image.
You also might want to look at the POPUPBORDER and POPUPITEM parts, in order to fully change the menus appearance. I havent verified where the font color is located, but i guess its the TEXTCOLOR properties
of the just stated parts.
The aim of the tool you linked, is mainly to modify existing themes. The styles on DeviantArt are probably made using a (commercial) tool called "Windows Style Builder".
