The best way to know is asking the designer to try the logo in differents colors, over different color backgrounds. To find the best logo you have to imagine how they are going to be used. If you think you will use them in one single color I recommend you to ask the designer to make a one single color version of the logo and see how it looks, maybe in two versions (light and dark backgrounds). To use the logo with all the colors presented till now, the black would have to be replaced by white when over a dark background. If you think the logo will be used in very small labels, for example, it helps if it is clean and legible. The designers should think about these things, but sometimes some of them don't do, or forget to do it. I chose a concept related to neoclassical style. If your business is in a neoclassical building, it would be compatible. You see, even the architecture counts when making and choosing a logo.