molleraj the Duplicolor paint that is a match (or really close match) for Schwinn Sky Blue is Chrysler Insense Blue Pearl. This is also available in a brush on. After posting about the paint, i realized that you also will need a silver base paint. If you use Duplicolor touch up paint, it probably would be best to use a Duplicolor silver touch up paint first. Sky blue is a radiant or Candy Apple paint. It has a silver base and a light color coat to give it that shimmering look. Buying one Duplicolor touch up paint is a little pricy but having to buy two, you have to be motivated.
The same goes for nail polish and Testor's paint. Silver first. Let it dry and then a light stroke of blue.
BCC0422 is the Duplicolor paint code. PB3 is the Chrysler paint code.
Sorry, I know this is a tangential offshoot.