Accurate Excel Formatting Revamp

I need my existing workbook given a clean, consistent face-lift. Every sheet already calculates correctly, so please leave all data, formulas, column widths, and sheet names untouched. The task is strictly formatting: • Apply only the built-in, Standard Excel themes for cell styles and colours... (Budget: ₹100 - ₹400 INR, Jobs: Copy Typing, Data Entry, Data Processing, Excel, PDF, Visual Basic, Word)