Color Cells Based On Color Of Preceeding Cell

I am looking for a very simple script that will achieve the following:

On the clicking of a button, Select and shade in a cell yellow, delete the yellow shading of the previous cell. The shading & selection should move up a column of cells, 1 at a time, in the following order:

From B10 to B9, then B9 to B8, B8 to B7 etc until the selection and shading is at B2. Once it is at B2 subsequent clicks will simply keep it at B2 (the top). Thus after 8 clicks the shading & selection should travel from B10 to B2, with only 1 cell being shaded yellow and selected at any one time.