I couldn't find anything for the style Parts On/Off, but here is the strings for XG Multi Part Channel On/Off
Off: F0 43 10 4C 08 ch 04 dd F7 where ch is the channel number = 00 - 0F ( 1 - 16) and dd = 7F (Off)
On: F0 43 10 4C 08 ch 04 dd F7 where ch = 00 - 0F (1- 16) and dd = 00 (On)
If you want to turn the style channels on/off you might try using the cc07... Volume 00 = Off and 127 = On
Joe H