Easier to read guages?

[Bob Denton <foxriverkid@earthlink.net>]

I am getting ready to begin setting up my dash/guages on my roadster. My 
dash is well shaded by a hard tonneau. Since my eyes are the same age as 
me, they are "older", so to speak. So, the dilema. I will spend most of 
my time in the car with my eyes looking at bright objects like North 
Carolina concrete and sky, or Utah salt and sky. What should my guages 
be to be readable? White numerals on black or black numerals on white?

I'd really appreciate some help here.

Bob Denton