I'm using the batch convert process and have already set all elements to "color by level" but now would like to set all levels to a single color (say for instance, red).
I've found and used the Color Mapping Table %unmapped -> %bylevel wildcards.
...is there something silimar for Level Mapping Table to select all levels and change to color red?
You can use the keyin "level set bylevel color 3 *"
to change all levels to have a bylevel color of color number 3 (which in the standard color table is red).
Put that in a text file and use the Batch Process tool to process all the files you want.
You could also use Level Overrides and turn on the View Attributes > Level Overrides setting, instead of physically changing the colors.