My outdoors handgun ranges face east, so for target shooting the sun shines from over your shoulder most of the day.  Ideal for outlining black sights.  I agree these are too tight for general use, and by that (for the lurkers) I mean there isn't enough daylight between the front and rear sights for quick acquisition--thin light bars as they like to say today.  But for shooting groups, I don't think I'd have anything different.  The rear notch could be slightly wider, but otherwise I'm happy with ALL BLACK.  I would never change to fiber optics, white or colored shapes, or other glow-wiz sights.  One can those all day long on a combat gun if he likes, but I'm of the opinion that they have no place on a target gun--meaning a group shooter.  (But that's me only!)

If you get into a run 'n' gun game where you are still target shooting per se, but need more speed and less accuracy, okay, different story, and then I'd bless whatever sight change you needed.  ME, I'd simply go to fat light bars, still with all black, depending on the sport's target type.  If I needed anything different I'd consider a white dot up front.  (Again, me!)

For me, the speed comes from the width of the light bars.  As I understand it, you however, are talking about acquisition or even just seeing the sights at all?  Considering we're of an age, it's unfortunate, but it is what is (a phrase I initially hated but came to employ once I understood it's real purpose.  It means "the situation exists and we have to accept it because we can't change it.") 

A) If you can avail yourself to an outdoor range, it and of itself would be a huge improvement, believe me!

B) If not, then you may have to bite the bullet and change at least the front sight.  This shouldn't be a big deal as it's a dovetail fit.  Do you have the Brownell's 1911 catalog?  It's FREE and you can order it here.  This has a tremendous selection of sights for the 1911 and you can see what's available, what will fit your Springfield as a "drop-in," and what the costs will be.  And this is something you can have installed locally or by someone with a dovetail sight mover you happen to know.  

Of course you can ask around here as well.  One person well experienced in this area is Allan.  Another is Jerry.  Both have dinked around with sights quite a lot.  Allan especially has gone through a progression of sights as his eyes changed, and you'll find him slightly ahead of us, vision-wise, so it really pays to pick his brain.

As always, my personal exhortation would simply to keep in mind the difference between target sights and combat sights--the former are for shooting clannish groups, as the late Dean Grennell liked to cal them.  The latter are for fast acquisition, speed of use and recovery, and acceptably good accuracy.  There is no such thing as an "expert of all trades."  There is the expert, and there is the jack of all trades.  What you are looking for is the "expert sight."  Expert for target shooting if possible.  Otherwise it is going to be something of a jack--something is going to have to go.  And based on my experience plus my reading on vision, sights, and targets over the years, I believe that if you introduce too much in the way of color and odd shapes, you will directly give up precision.  Balance it the best you can to meet your own needs.