GPS/Plotter Can't see numbers for depth?

[bkupmstr]

I currently have a Raymarine RL70RC Plus chart plottter
Still getitng used to it.
First of I have RTFMed and cannot find the info in the manual but

is there a way for these old eyes to be able to increase the font size of the numbers displaying the depths?
Currently its a red number on a blue background that it extremely hard to read in daylight.
When its darker its a bit easier, I had a 30something look at it saturday and she said she can see it fairly well

[imagine2frolic]

Getting old ain't for sissies. I am proof it's tough I tell ya .........i2f

[RealityCheck]

Have no knowledge of your specific system but on my Garmins I just do a Zoom In until I see the numbers for the area I want and then Zoom back out. My number are Black and guess I'm glad they are. I know when I interconnect with my PC I have many more options with the charts including colors of the notes in many cases.