That was it! The RBG in the COLOR clause is not the same as the RGB function. First 3 values are the foreground, the last 3 are the background. Thanks!

@ 10,10 SAY REPLICATE( "_", 20 ) COLOR ( "RGB(0,0,0,255,0,0)" )

>>I've tried a number of variations of the RGB syntax, but still doesn't work.
>>
>>

>>* This works. Red background with black underline...
>>@ 10,10 SAY REPLICATE( "_", 20 ) COLOR ( "N/R" )
>>
>>* This does not work? It displays all white...
>>@ 10,10 SAY REPLICATE( "_", 20 ) COLOR ( "RGB(0,0,0) / RGB(255,0,0)" )
>>

>
>See Re: Colors Thread #1089604 Message #1089612
>
>and Message #812980