The ruffled sword will actually produce white flowers, they will be alittle above the water, but none the less...it has very sweet smelling white flowers. Its a long stem like protrusion from the base that will extend to the top of the tank and then move horizontally. From there you will see runners starting to form. the little buds will flower and from there you will gain new ruffled swords. I am currently awaiting mines blooming time. It might not however since i moved it to a new tank recently

Some photos ive found of the ruffled sword flowers:
http://members.fortunecity.com/broadsword/...ower01_thmb.jpghttp://members.fortunecity.com/broadsword/...ordFlower05.jpgI too have heard of Cabomba flowering, but mine havent.
i dont know if you have found photos of the cabomba flower, but here is one:
http://www.csd.net/~cgadd/aqua/cabflower050600d_thumb.jpgHowever, if you are looking to just add color, you might want to see if you can find a plant called Telanthera <i> alternanthera reineckii</i> which is a midground plant and tends to like alot of light, it will grow in less lighting, but the colors might not be as bright. it has narrow leaves that are a nice green, but on the underside a nice redish/pink hue. Mine seems to be happy, and my goldies dont bother it.
A photo i found:
http://www.csd.net/~cgadd/aqua/areineckii061100a_thumb.jpg I also picked up a plant called a Cardinal Plant <i> Lobelia cardinalis</i> which has a huntergreen topped leaf with a rich purple underside and it sits very low, so it would have to be a foreground plant. I havent had it very long, so I can if you want, keep you updated on it and i cant seem to find any information on it that matches what it looks like, so it might be named wrong
Please feel free to email me if you wanna talk plants