Hello Sergey Hello Borislav
Thank you for your answers.

I changed the &H to 0x in the include file with no success.
The debugger shows colornumbers with lenght 10. (4278190080 for black as example) and the error message is:
Ole error 0x800 2000a ausserhalb des Bereichts (=outside the area (or array))

Using color numbers with length 8 instead of rgb(x,y,z) works (.color = 16777088 for example)

My special problem is "Transparent" which is defined as "FFFFFFFE" without an leading &H in the include file!!!
Using .color = Tranparent shows error type conflict.
Using .color = 4294967294 (=decimal FFFFFFFE) shows error
Ole error 0x800 2000a ausserhalb des Bereichts (=outside the area (or array))

Any more ideas??
Best regards
Albert