6254BD ch3&4 trace color

oldman

I bought 6254BD several yeas ago and updated software to ver2.2.7 (driver 3.4.7).
Channel label/Trace colors of Ch1 is yellow/yellow,ch2 is dark red/black .
But those of Ch3 and 4 are black/black So it is immpossible to identify each channel.
Is there any method to change Channel label/Trace colors ?

oldman

prtially Self Resolve

Select     display -> intensity -> waveform  then movebar to right
then obtained trace color.

But Channel label for trace is still black.