I agree. poor choose of ui design, too much colors ( need to stay green/grey), pixel font is bad ( stay cartoon , kerbals already are).
did some quick test for stages side.
I made a small mission , early mercury program (little joe) , you need mods: KER, BDB, tantares , tantaresLV and the folder inside this link :
https://www.dropbox.com/s/dsn7cnm8plb0xww/Mercury program part MBI.zip?dl=0
Now that ksp dlc is here, i finish those 3 parts, i think it will help make better historical mission, compatible with BDB parts in mind:
Mercury parts
btw i tried my other parts , all seem to be working.
Sry guys, i was taking a break from KSP, i work on a personal project, so i don't have new parts.
All parts mods seams to work fine for me in 1.2.2 , tell me if there is something.