How do I redo tile floors without getting new ones?

My 1980's kitchen has an ugly brick red tile floor with dark grout. We're readying the house for market and have spent plenty on a new laminate flooring in the living/dining rooms. We've remodeled bathrooms, repainted and added bright white trim around doors and floor. The only dark place left is the kitchen. I have limited funds to improve it but will repaint walls and cabinets. But that floor...!!! Help

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