set_fill_color
Modify the fill color of Figma elements like text or frames by specifying RGB values to customize design 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:605-643 (registration)Registration of the 'set_fill_color' MCP tool, including the description, input schema using Zod, and the handler function that proxies the command to the Figma plugin via sendCommandToFigma.
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: ${error instanceof Error ? error.message : String(error) }`, }, ], }; } } ); - src/talk_to_figma_mcp/server.ts:615-642 (handler)The core handler function for the set_fill_color tool. It takes nodeId and RGBA values, sends a 'set_fill_color' command to the underlying Figma plugin, and returns a formatted success message with the node name or an error message.
async ({ nodeId, r, g, b, a }) => { try { const result = await sendCommandToFigma("set_fill_color", { nodeId, color: { r, g, b, a: a || 1 }, }); const typedResult = result as { name: string }; return { content: [ { type: "text", text: `Set fill color of node "${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) }`, }, ], }; } } - Zod schema for validating input parameters to the set_fill_color tool: nodeId (string), r/g/b (numbers 0-1), a (optional number 0-1).
{ 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)"), },