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

packages/@n8n/nodes-langchain/nodes/tools/ToolCalculator/ToolCalculator.node.ts

@@ -16,6 +16,7 @@ export class ToolCalculator implements INodeType {
 		displayName: 'Calculator',
 		name: 'toolCalculator',
 		icon: 'fa:calculator',
+		iconColor: 'black',
 		group: ['transform'],
 		version: 1,
 		description: 'Make it easier for AI agents to perform arithmetic',

packages/@n8n/nodes-langchain/nodes/tools/ToolCode/ToolCode.node.ts

@@ -26,6 +26,7 @@ export class ToolCode implements INodeType {
 		displayName: 'Code Tool',
 		name: 'toolCode',
 		icon: 'fa:code',
+		iconColor: 'black',
 		group: ['transform'],
 		version: [1, 1.1],
 		description: 'Write a tool in JS or Python',

packages/@n8n/nodes-langchain/nodes/tools/ToolVectorStore/ToolVectorStore.node.ts

@@ -18,6 +18,7 @@ export class ToolVectorStore implements INodeType {
 		displayName: 'Vector Store Tool',
 		name: 'toolVectorStore',
 		icon: 'fa:database',
+		iconColor: 'black',
 		group: ['transform'],
 		version: [1],
 		description: 'Retrieve context from vector store',

packages/@n8n/nodes-langchain/nodes/tools/ToolWorkflow/ToolWorkflow.node.ts

@@ -32,6 +32,7 @@ export class ToolWorkflow implements INodeType {
 		displayName: 'Call n8n Workflow Tool',
 		name: 'toolWorkflow',
 		icon: 'fa:network-wired',
+		iconColor: 'black',
 		group: ['transform'],
 		version: [1, 1.1, 1.2, 1.3],
 		description: 'Uses another n8n workflow as a tool. Allows packaging any n8n node(s) as a tool.',