R/C models nearly always require some painting to achieve a completely finished appearance — even when an iron-on covering, such as Top Flite MonoKote, is used over most of the structure. Why? Certain materials are more compatible with paint than iron-on film...certain parts are easier to paint than to cover.
Materials and parts such as the following are frequently painted:

In many ways, painting is more "science" than "art." Unlike ordinary spray paint, Top Flite LustreKote has a special chemistry that offers many advantages in modeling applications. LustreKote spray paints have been formulated to resist model fuels and match MonoKote colors perfectly, without mixing.
A LustreKote finish generally consists of three layers: a primer coat, color coat(s) and a clear coat. Together, these layers provide the longest-lasting, most color-fast and fuel-resistant finish available from a ready-to-use spray paint.
Primer Coat:
Prepares the bare surface of a part to accept paint and provides a uniform white base coating for the color coat. Primer also includes fillers that repair small scratches and surface imperfections.
Color Coat:
Offers excellent resistance to model engine fuels containing up to 15% nitromethane, and to gasoline/oil fuels as well.
Clear Coat:
Enhances or reduces the glossiness of the color coat (High Gloss Clear provides a "showroom" shine; Flat Clear leaves a matte finish, well- suited for scale models). The clear coat also evens out paint lines on multi-color finishes, so they look like one continuously painted layer.
REMEMBER: LustreKote paint colors are represented as they appear with LustreKote Primer as the base coat. Any other base color may result in a poor color match.
Continue to: Surface Preparation