message: MINOR: Add support for RGBA encoded outline colors in SolidLineTechnique.
  Previously SolidLineTechnique outline color was using ColorCache which
  does not support alpha channel, this change provides RGBA support for
  outline color.
diff: @@ -54,7 +54,6 @@ import { assert, LoggerManager } from "@here/harp-utils";
  import * as THREE from "three";
  import { AnimatedExtrusionTileHandler } from "../AnimatedExtrusionHandler";
  -import { ColorCache } from "../ColorCache";
  import {
  applyBaseColorToMaterial,
  applySecondaryColorToMaterial,
  @@ -1112,12 +1111,13 @@ export class TileGeometryCreator {
  if (hasSolidLinesOutlines) {
  const outlineTechnique = technique as SolidLineTechnique;
  const outlineMaterial = material.clone() as SolidLineMaterial;
  - const outlineColor = ColorCache.instance.getColor(
  - outlineTechnique.secondaryColor !== undefined
  - ? getPropertyValue(outlineTechnique.secondaryColor!, displayZoomLevel)
  - : 0x000000
  + applyBaseColorToMaterial(
  + outlineMaterial,
  + outlineMaterial.color,
  + outlineTechnique,
  + outlineTechnique.secondaryColor ?? 0x000000,
  + mapView.zoomLevel
  );
  - outlineMaterial.uniforms.diffuse.value = outlineColor;
  if (outlineTechnique.secondaryCaps !== undefined) {
  outlineMaterial.caps = outlineTechnique.secondaryCaps;
  }
  