The word vivid according to the collin dictionary means that something is very clear. For example if someone says that you place a vivid picture in their mind they mean you place a clear picture in their mind
It means clear. Like "my the colors are so vivid now that I got my laser eye corrective surgery."
1. Strikingly bright or intense, as color, light, etc.: A vivid green.
2. Full of life; lively; animated: A vivid personality.
3. Presenting the appearance, freshness, spirit, etc., of life; realistic: A vivid account.
4. Strong, distinct, or clearly perceptible: A vivid recollection.
5. Forming distinct and striking mental images: A vivid imagination.
1. Strikingly bright or intense, as color, light, etc.: A vivid green.
2. Full of life; lively; animated: A vivid personality.
3. Presenting the appearance, freshness, spirit, etc., of life; realistic: A vivid account.
4. Strong, distinct, or clearly perceptible: A vivid recollection.
5. Forming distinct and striking mental images: A vivid imagination.
Bright colors