Engine icon arrows on MFDisplay are dim

Good morning,
I bought a 2010 Prius (trim level 5) with Advanced Tech Package (and 115k miles) over the weekend and am in love with the car. One of my concerns (if it can be called that) is that the arrows that radiate from the Engine icon on the Multi Function Display are very dim and not nearly as bright as the Green arrows that radiate from the Generator or the Battery icons.
Is there a way to increase the brightness of the Engine arrows? Is there some Display setting that I can increase?

Note: my car does suffer from the 'haze' / foggy glass syndrome, though the Green arrows still show up just fine.

Thanks so much

 

And to clarify --
> Engine icon: bright green
> > Engine arrows: dim (brown? red?)
> Generator icon: bright green
> > Generator arrows: bright green
> Battery icon: bright green
> > Battery arrows: bright green