The Question seems not to be very common (I was not able to find something similar in the script forum). The Attached Scripts converts the selected symbols to groups and attach the colors of the symbol to that group. Made to fix some incompatibility with DWG Block Colors. Maybe some one else can use it.
The Attached File contains two Scripts 01 > attaches class colors, 02 > attaches colors from the attribute palette.
Symbol to Group Attributes.vwx
Symbols2GroupColors.mp4