fix(editor): Nodes' icon color in dark mode (#12279)

packages/@n8n/nodes-langchain/nodes/retrievers/RetrieverContextualCompression/RetrieverContextualCompression.node.ts

@@ -19,6 +19,7 @@ export class RetrieverContextualCompression implements INodeType {
 		displayName: 'Contextual Compression Retriever',
 		name: 'retrieverContextualCompression',
 		icon: 'fa:box-open',
+		iconColor: 'black',
 		group: ['transform'],
 		version: 1,
 		description: 'Enhances document similarity search by contextual compression.',

packages/@n8n/nodes-langchain/nodes/retrievers/RetrieverMultiQuery/RetrieverMultiQuery.node.ts

@@ -18,6 +18,7 @@ export class RetrieverMultiQuery implements INodeType {
 		displayName: 'MultiQuery Retriever',
 		name: 'retrieverMultiQuery',
 		icon: 'fa:box-open',
+		iconColor: 'black',
 		group: ['transform'],
 		version: 1,
 		description:

packages/@n8n/nodes-langchain/nodes/retrievers/RetrieverVectorStore/RetrieverVectorStore.node.ts

@@ -15,6 +15,7 @@ export class RetrieverVectorStore implements INodeType {
 		displayName: 'Vector Store Retriever',
 		name: 'retrieverVectorStore',
 		icon: 'fa:box-open',
+		iconColor: 'black',
 		group: ['transform'],
 		version: 1,
 		description: 'Use a Vector Store as Retriever',

packages/@n8n/nodes-langchain/nodes/retrievers/RetrieverWorkflow/RetrieverWorkflow.node.ts

@@ -41,6 +41,7 @@ export class RetrieverWorkflow implements INodeType {
 		displayName: 'Workflow Retriever',
 		name: 'retrieverWorkflow',
 		icon: 'fa:box-open',
+		iconColor: 'black',
 		group: ['transform'],
 		version: [1, 1.1],
 		description: 'Use an n8n Workflow as Retriever',