We have all done it - bought paint/wallpaper for decorating and half way through the project you realise you have made a mistake !
Bit bright are they not ! ( if placed in the back garden they would probably attract helicopter landings !)
Think the problem is the cloth that I use on my table is a lot darker and this makes them stand out more .
The actual hills work very well, the contour levels can be swapped about or used as separate hills on their own. I will be investigating the chances of a darker paint job this weekend .