set_fill_color
Change the fill color of Figma design elements by specifying RGB(A) values for text or frame nodes to update visual appearance.
Instructions
Set the fill color of a node in Figma can be TextNode or FrameNode
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| nodeId | Yes | The ID of the node to modify | |
| r | Yes | Red component (0-1) | |
| g | Yes | Green component (0-1) | |
| b | Yes | Blue component (0-1) | |
| a | No | Alpha component (0-1) |
Implementation Reference
- src/talk_to_figma_mcp/server.ts:585-612 (handler)The handler function that implements the core logic of the 'set_fill_color' tool. It sends a 'set_fill_color' command to the Figma plugin with the provided node ID and RGBA color values, handles the response, and returns a formatted success or error message.
async ({ nodeId, r, g, b, a }) => { try { const result = await sendCommandToFigma("set_fill_color", { nodeId, color: { r, g, b, a: a || 1 }, }); const typedResult = result as { name: string }; return { content: [ { type: "text", text: `Set fill color of node "${typedResult.name }" to RGBA(${r}, ${g}, ${b}, ${a || 1})`, }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error setting fill color: ${error instanceof Error ? error.message : String(error) }`, }, ], }; } } - The Zod input schema for the 'set_fill_color' tool, validating the nodeId and RGBA color components (r, g, b required between 0-1, a optional).
nodeId: z.string().describe("The ID of the node to modify"), r: z.number().min(0).max(1).describe("Red component (0-1)"), g: z.number().min(0).max(1).describe("Green component (0-1)"), b: z.number().min(0).max(1).describe("Blue component (0-1)"), a: z.number().min(0).max(1).optional().describe("Alpha component (0-1)"), }, - src/talk_to_figma_mcp/server.ts:575-613 (registration)The registration of the 'set_fill_color' tool on the MCP server using server.tool(), including name, description, input schema, and handler function.
server.tool( "set_fill_color", "Set the fill color of a node in Figma can be TextNode or FrameNode", { nodeId: z.string().describe("The ID of the node to modify"), r: z.number().min(0).max(1).describe("Red component (0-1)"), g: z.number().min(0).max(1).describe("Green component (0-1)"), b: z.number().min(0).max(1).describe("Blue component (0-1)"), a: z.number().min(0).max(1).optional().describe("Alpha component (0-1)"), }, async ({ nodeId, r, g, b, a }) => { try { const result = await sendCommandToFigma("set_fill_color", { nodeId, color: { r, g, b, a: a || 1 }, }); const typedResult = result as { name: string }; return { content: [ { type: "text", text: `Set fill color of node "${typedResult.name }" to RGBA(${r}, ${g}, ${b}, ${a || 1})`, }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error setting fill color: ${error instanceof Error ? error.message : String(error) }`, }, ], }; } } );