Highlight Color Issue

I have done something to my color scheme that is causing me a problem. Maybe someone can help:

When I make a selection of any of the numbers in my transport panel and the number is highlighted, the white highlight is so bright I can no longer see the number. For example if I want to move the cursor from bar 1 to bar 10 by holding the mouse over the number, clicking and dragging, the white highlight is the same color as the number, so I can not see the number as I drag the mouse.

Hope this makes some sense.