I fish a spook and a pop-r mostly for topwater, always have both tied on from April to November. Some days they will eat the paint off of one and not touch the other. To me, color isnt real important on a topwater plug with the exception being very clear water, I will also change the feathers on my pop-r depending on the situation, if I am fishing around bream, I make sure to use chartruse feathers.
With the spook I usually start out just walking at a steady pace. If that doesnt work, I will slow down my walk, even stopping it for a few seconds at times. If I am around fish busting shad and not getting bit, I will walk it, then reel it straight about 10 ft and the go to a slow walk, sometimes that will buy a fish or two.
With the pop-r it is pretty much twitching and pausing with varying cadences and speeds. A pop-r can also be walked similar to a spook.