How to move axis and ticklables in RegionPlot to the top? How to change border line color?

I use this code

RegionPlot[Sin[t^(1/3)*y] > 0, {y, 0, 5}, {t, 0, 8},   FrameLabel -> {"y", Rotate["t", 270 Degree]}] 

and the result is

enter image description here

Now, I have three questions:

  1. How can I move the $ y$ axis (and ticklabels) to the top instead of bottom?
  2. How can I change border lines color?
  3. Is it possible to change the color of one of the blue parts?