Color.scala

case class Color(value: String, name: String)

ColorService.scala

import io.circe.jawn._
import io.circe.generic.auto._

object ColorService {

	class ColorServiceHandler {
	
	  // colorTable provided as private var
	
		def postColor(request: HttpServiceRequest, responder: HttpServiceResponder) {

			lazy val requestBody = Bytes.toString(request.getContent)

			decode[Color](requestBody).fold(
				{ error => responder.sendError(400, error.getMessage) },
				{ color => colorTable.write(color.name, color) }
			)

		}
		
  }
}