bridesmaids dresses

alrighty guys i need your opinions.........my bridesmaids dresses are going to be either black and white or all black.....and i want to do red roses for the bo-kays!! FH's two nieces are also going to be in the bridal party as the JR bridesmaids....but im not sure i want them to wear black...they will be 8 and 11 and i feel like its kinda innapropriate to have them wear black....i was thinking of choosing a dress in silver with a black sash maybe or since i want red roses putting them in like a candy apple red color.......those were the only ideas i could come up wtith.......please let me know what you think of them and if you have any other ideas let me know....TIA!!!!!

Red on Red never typically has enough contrast UNLESS you do red roses with a white rose border around it this way the flower pop against the dresses if you do a red dress of course.

I think silver is really classy looking though and it will not be too harsh on a young girls skin.