Ugly Plot Style names

[IFRs]

I have a few drawings that do not print some dimensions correctly.
I print to PDF using styles, all layers and objects use a style called Style 1 that uses Monochrome.stb
The dimensions are on the layer Dims whose plotstyle is set for Style 1
The dimensions are on the correct layer, properties show plot bylayer, text plot bylayer, etc.

The dmensions print their text the layer color, everything else is OK.
Lines, arrows, etc are black but the text is the layer color.

By exploding the dimension, I find that the text that does not print correctly is associated with a missing plot style.
This should be easy to fix - just make the new styles.
When I explode these dimensoins I find that the text is associated with a plot style "th as*"
The "*" is an illegal character so I can't make a new plot style with that name.

If it were one dimension, easy - just delete and make a new one.
However, the drawing has about 40 tabs and hundreds of individual (associative) dimensions.
My work-around is to change the color of layer Dims to 7 (white) and then it all works.
But I don't like that on my screen - each object class has a specific color I've been using since 1982 and I like my dimensions to be color 143.

Question:
How can I rename or replace a missing plot style with one that works or
How can I assign the text of dimensions to the correct plot style

 

[Sparweb]

Since it's looking for a *.STB file, what about making a copy of Monochrome.stb and naming it "th as1.stb"?
I don't know what the * does but in good ol' DOS it's a wildcard that allows for any filename with the first characters to fit.
Can't say I think it will work - but I'd try it just to see.