use theme colors for trend icons

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/code-coverage-backend/src/service/jsoncoverage-types.ts

@@ -23,7 +23,7 @@ export type JsonCodeCoverage = {
 
 export type JsonCoverageHistory = {
   entity: EntityName;
-  history: Array<CoverageHistory>;
+  history: Array<AggregateCoverage>;
 };
 
 export type CoverageHistory = {

plugins/code-coverage-backend/src/service/router.ts

@@ -33,11 +33,7 @@ import { aggregateCoverage, CoverageUtils } from './CoverageUtils';
 import { Cobertura } from './converter/cobertura';
 import { Jacoco } from './converter/jacoco';
 import { Converter } from './converter';
-import {
-  EntityRef,
-  parseEntityName,
-  parseEntityRef,
-} from '@backstage/catalog-model';
+import { EntityRef, parseEntityName } from '@backstage/catalog-model';
 
 export interface RouterOptions {
   config: Config;