you have to edit your colormap.pcx file in the pics\ folder.change the color that q2 uses as the railtrail to something bright.
yeah, I tried the colormap way, and just about every map I went on had that color tinted here and there...if you use r1q2, just use the cl_railtrail command. I use 13.. a nice "baby" blue. 113 is nice too, little whiter.can use any value from 1-256 I think