I just finally got around to adding plants so I can't comment on that, but the effect my 50/50 "sunlight/actinic blue" light has on my fish are pretty great.
My Green barbs apear a MUCH deeper, richer green, and at some angles a deep green/blue. It makes the X-ray Tetra's almost glow, and the male guppies appear rather stunning. It rather washes out my Sunset Gourami's (kinda orange colored).
Of course that's at 50/50. I'm rather thinking of going with pure Actinic.
Heh, hope it helps at all.