I need 85 Olds wheel cover Blue key
 

I can't believe how hard it's been to find the correct lock key ( blue ) to remove the wheel cover on my 85 Olds Toronado. Ever since this vehicle has become mine I've been dealing with this plight. Now tires are down, need to air up but valve stem is under wheel cover requiring removal. If I were to get it to Discount tire they maybe able to get off ( they did once since that's where I bought the tires 6 years ago ) .. but I can't with two tires down. Anyone know where I can obtain?