Change Door Text to Black

I need a fast, precise color adjustment on a single PNG file. The white lettering on a door must be switched to pure black (#000000) while keeping every other aspect—font, size, placement, and overall style—exactly as it is now… (Budget: $10 – $30 USD, Jobs: Adobe Photoshop, Background Removal, Color Grading, Digital Art, Graphic Design, Photo Editing, Photoshop, Photoshop Design)