its electrolumiscent panel (sp?) not an LED I think, so not easy.
I run it all the time in 'dark mode' and it matches a bit better than full brightness.
what you could do is apply a clear but darker blue tinted film to the entire front (or get a cover of some sort), I reckon that could just nudge it towards OE
. only thing it would do is make the red needle a funny tinge.