Will she be using the same gear she owns now that matched the sold bike? If so, you might want to consider that in the new bike color. If she is really into the colors, she might feel like she needs to get all new gear to match the new bike if she thinks things clash.

If the fashion of the gear is not your thing, you may be saying... umm, I dunno what she has in colors. That's ok. Can ya snoop in the closet to check out her stuff? Or ask one of her GFs that knows her stuff well. Lastly, if she has a fav lbs sales rep that she picks stuff out from, ask them what her style is.

Btw, the yellow is fun, but the gray is more neutral to bling it out as posted. My bike is white/black/brushed silver. If I get "color sick" of one thing, switching out the rest of the stuff is cheap.

Nice gift regardless.