I think the OP was referring to the color of the trace on the display. Yes, it does seem to be linked to the color on the input BNC legends. Thanx for pointing that out, I had missed that. The INVERT I was referring to was a PRINT function in the UTILITY menu. From the DS1000 series user guide:1) I don't think you can change the trace color for the different channels. They are painted on the enclosure.
2) "Invert" probably inverts the signal. That's what it does on my unit.
3) @Mickey: Have you read the part about never pressing "Auto?" It is not in the manual. If you are adventuresome, press it.![]()

Another illustration of why hijacking a thread can lead to confusion.The OP doesn't even have a Rigol anymore so it is moot.![]()