...this. A full repaint with decals seems excessive given your description of the problem, It's a relatively easy white to match. Mask everything you don't want to get paint on, prep your rusted spots, primer them in white, and then find a good white match for your color coat. If you use a flat, you'll probly get a better final match by clear coating over it.

AS tempting as it is to try to do this without stripping off all the components, don't do it. You get much more control with a bare frame and fork when it comes time to apply the paint (or paints).