It is windows 7 gives normal colour ramp in ArcGIS but it is abnormal in windows 8.
I need to get the colours with their names..i.e. Fores green
It looks like you probably have multiple styles referenced in each of those. Or, you have multiple copies of each color in one style. It's also possible that styles with the same name on different machines have had colors added or removed.
First, check to make sure the same styles are referenced on all OSs. Then try un-referencing all but the ESRI style and your user style. You can do that through the Style Manager under the Customize menu. If you still see the same thing, look into the Colors folder for the referenced styles (expand the folders in the left-hand pane of the Style Manager).