I think the red filters might IMPROVE the treble. Because they don't lower the entire treble, just two areas that are above neutral anyway. So it actually reduces those to peaks to a more neutral state. The orange take that same effect a bit stronger, so i can't say if you'd like those or not. The orange would give better overall balance with bass, but you do start to hear the treble becoming less prominent a tad. The differences are small and the filters cheap. What can it hurt to try?
If you like them you'll be glad you tried. If you don't, you can come back here and tell how much of a fool i am! ;-). For what it's worth, although they chose the greens don from etymotic told me the initial prototypes actually used thd red filters!!!! So they can't be that bad :-P
Can't you see by now I keep refusing because I wasn't sent all those filters for free by Mr luisdent?