HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\RXX.X\ACAD-XXXX:XXX\FixedProfile\Editor Configuration
Где X зависит от версии и языка AutoCAD:
"Model AutoSnap Color"=dword:00007fff
"Layout AutoSnap Color"=dword:0001cc01
"Parallel AutoSnap Color"=dword:0000ffff
"Perspective AutoSnap Color"=dword:00019801
"BEdit AutoSnap Color"=dword:0001cc01
"Model 3d AutoSnap Color"=dword:0000ffff
"Layout 3d AutoSnap Color"=dword:00ff7f00
"Parallel 3d AutoSnap Color"=dword:0000ffff
"Perspective 3d AutoSnap Color"=dword:00ff7f00
"BEdit 3d AutoSnap Color"=dword:00ff7f00