COlors that look wonderful for indoors evening, since this is a more formal time, are for men gray, with pinstripe vests, and oversized ties, except for the groom, his "tie or bow tie" should color coordiante with your bridal bouquet.
And for your bridesmaids gowns, a royal blue,or a forrest green, but not together, and as a second color go with a cream color, remember materials should not be "lacy", as no one wants to be the doilie bridesmaid.
These colors are safest, and look good on everyone, but really shine during the evening.
NOW>>> How formal are you going? All the way surroundings too?
Because if you are get a matching cream colored tulle to do up the points of interest areas,( cake cutting table, gift table, etc.) it makes everything look like it's floating on a cloud, and it's very versatile, you can attach blue flowers to it any where or have the flower hanging off the top of the table onto the tulle attached around the front.
The reason I say cream color, is because you should be the shining focus point in the room, if you have too much white, you just Blend,, and you certainly don't want that on the most important day our your life.