Consider specifying a molded-in color instead of paint. The cost savings could more than justify any increase in material cost for a colored material with the required exposure performance. If you must paint, select a plastic that paints easily, preferably one that does not require surface etching and/or primer.
Markings and Logos
Secondary methods of adding directions, markings, and logos including labels, decals, printing, stamping, etc. add cost and labor. Injection molded-in techniques, when applied properly, produce permanent lettering and designs at a very low cost. Mixtures of gloss and texture can increase contrast for improved visibility.
Look for opportunities to add easily-molded features to simplify assembly and enhance product function such as aligning posts, nesting ribs, finger grips, guides, stops, stand-offs, hooks, clips, and access holes.From Website
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