Standard Color Coding for Cartridge Hookup

OK - this sounds stupid, but the info is nowhere to be found in the manual... Can someone confirm the standard color coding for attaching a cartridge to a headshell. My current understanding is:

R+ Red
L+ White
R- Green
L- Blue

My LP12 w/ Denon DL103R sounds like the main vocal or solo saxophone is coming out of the sides of the setup - but I'm using the following color coding:

R+ Red
L+ Blue
R- Green
L- White

Should I switch to the top one? I've experimented by switching one speaker cable's +/-, and I get a centralized voice but seemingly duller bass. Not entirely consistent.

Thanks.