Yes, you can repaint any color helmet to any color. I have fellow teammates that take their old helmets and paint them to our orange all the time.
Cardinal
Repaint it with the original color.
Blue
They don't match because fabric absorbs dye much differently than the helmet holds the paint. Most teams offset this by wearing a different color jersey/helmet combination.
The Spartan helmet was bronze.
The Ohio State Football colors are Scarlet and Gray.
to make the cover of a helmet i mould metal and then get the kids to color it in
In many jurisdiction, a fire chief's helmet is white. However, it is not unusual for it to be the same color as the rest of the crew.
Dodger Blue
I think it's a black NCAA Pennant decal on the left side of the helmet at the bottom.
Metal gray.
yellow