set_fill_color
Modify the fill color of a Figma node by specifying its ID and RGB values. Use alpha for transparency adjustments within the Talk to Figma MCP server.
Instructions
Set the fill color of a node in Figma can be TextNode or FrameNode
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| a | No | Alpha component (0-1) | |
| b | Yes | Blue component (0-1) | |
| g | Yes | Green component (0-1) | |
| nodeId | Yes | The ID of the node to modify | |
| r | Yes | Red component (0-1) |
Implementation Reference
- src/talk_to_figma_mcp/server.ts:609-636 (handler)MCP handler that proxies the set_fill_color command to the Figma plugin, applying the specified RGBA color to the target node's fill.
async ({ nodeId, r, g, b, a }: any) => { 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: ${error instanceof Error ? error.message : String(error) }`, }, ], }; } } - Zod schema defining input parameters: nodeId (string), r/g/b (numbers 0-1), optional a (number 0-1).
nodeId: z.string().describe("The ID of the node to modify"), r: z.number().min(0).max(1).describe("Red component (0-1)"), g: z.number().min(0).max(1).describe("Green component (0-1)"), b: z.number().min(0).max(1).describe("Blue component (0-1)"), a: z.number().min(0).max(1).optional().describe("Alpha component (0-1)"), }, - src/talk_to_figma_mcp/server.ts:598-637 (registration)Registers the 'set_fill_color' tool with the MCP server, including description, input schema, and handler function.
// Set Fill Color Tool server.tool( "set_fill_color", "Set the fill color of a node in Figma can be TextNode or FrameNode", { nodeId: z.string().describe("The ID of the node to modify"), r: z.number().min(0).max(1).describe("Red component (0-1)"), g: z.number().min(0).max(1).describe("Green component (0-1)"), b: z.number().min(0).max(1).describe("Blue component (0-1)"), a: z.number().min(0).max(1).optional().describe("Alpha component (0-1)"), }, async ({ nodeId, r, g, b, a }: any) => { try { const result = await sendCommandToFigma("set_fill_color", { nodeId, color: { r, g, b, a: a || 1 }, }); const typedResult = result as { name: string }; return { content: [ { type: "text", text: `Set fill color of node "${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) }`, }, ], }; } } );