I'm sure you could eventually experiment enough to find something you like. 
I had sort of this same problem with an Electric Blaster. I wanted all of her electric powers to have basically the same coloration but as it turns out some of the default electric APP powers don't quite match up color-wise to the default electric primary/secondary set colors. My compromise was to come up with a custom color pair that most closely matched the powers I couldn't change and got everything looking much more uniform across all the powers.
That's probably the kind of thing you'll end up having to do.
Loth 50 Fire/Rad Controller [1392 Badges] [300 non-AE Souvenirs]
Ryver 50 Ele� Blaster [1392 Badges]
Silandra 50 Peacebringer [1138 Badges] [No Redside Badges]
--{=====> Virtue ♀
I love the color of the unchanged pyronic power but would like it to match my fire blasters primary, anyone what color combo comes close to looking like pyronic?
Is it even possible?