If the front sight is integral then you might want to just leave it alone or apply some bright paint. However, if you want to modify it to hold a red ramp insert there are kits available for that purpose. There is a video available on the Midway USA site that shows the procedure:
http://videos.midwayusa.com/index.ph...?id=1_7jz2uzsu
I am not advising you one way or the other, just pointing it out.