If you have gone complacent or perhaps even boring when it comes to scaevola, The Garden Guy is here to tell you it is time to crush the color combos. I realize there may be a generation or two that doesn’t even know the scaevola. This tough-as-nails summer-persevering flower from Australia hasn’t gotten a lot of press lately. The lack of press isn’t because it has lost its credibility on the garden stage, but perhaps because of the sheer number of new varieties since it made its debut. Scaevola exploded on the scene in 1997, when university trials were really getting started. A plant from Pro…