reason: the reason techs can't have cv is understandable, but then they should be compensated for that, by having the best and most particle effects, visual flair, and all the possible bells and whistles (controlled by graphic settings in the options menu). they should stand out above all other attacks in the game, to be special and feel special, since they cannot have cv, which drastically limits the user's ability to creatively express themselves or color match outfits properly.
why: it's only fair to compensate techniques in this way, so that they look and feel so special that nobody ever feels even the slightest need, wish, or desire to be able to alter or modify their appearance
additional: as a side note, since cv cannot be done, it would be nice if possibly, we had options to customize the non-color aspect of techs, for example, by making a few flowers or cherry blossoms float around either us or the tech when casting a tech. other options include shadowy tendrils, light sparkles, the old fearless attitude swirl effect, element color matching stars, flames, or glow that bathes the character, and so forth. these could also be sold as AC scratch items or scratch count bonuses.
