According to Osho, seeing colors, auras and sudden joy in meditation is a natural, mysterious upsurge of being—a transcendental glimpse. Do not interrogate it; doubt makes it vanish. Trust, relax and taste it fully; enter the colors, let delight open your wings. In that silent tasting, understanding flowers by itself, and the same radiance begins to appear around trees, flowers—everywhere—when you look with love and quietude.
When colors and happiness show up while meditating, don’t question them—just enjoy and go deeper; then they grow and you can sense that beauty everywhere.