For light:
* Brilliant: Intensely luminous, dazzling.
* Radiant: Emitting light or heat.
* Luminous: Emitting or reflecting light, glowing.
* Resplendent: Shining brilliantly; magnificent.
* Glowing: Emitting a soft, warm light.
* Illuminated: Lit up, made visible.
* Gleaming: Shining with reflected light.
* Sparkling: Shining with a flickering light.
For intelligence:
* Sharp: Quick and intelligent.
* Clever: Intelligent and resourceful.
* Intelligent: Having or showing intelligence.
* Brilliant: Exceptionally talented or intelligent.
* Astute: Having or showing an ability to accurately assess situations or people.
* Keen: Having or showing a quick and penetrating mind.
* Shrewd: Having or showing sharp powers of judgement.
For colors:
* Vivid: Bright and intense in color.
* Brilliant: Very bright and striking in color.
* Saturated: Intensely colored.
* Vibrant: Full of life and energy.
* Luminous: Having a glowing quality.
* Dazzling: Extremely bright and impressive.
Other meanings:
* Cheerful: Happy and positive.
* Optimistic: Hopeful and positive.
* Joyful: Full of happiness.
* Promising: Indicating a positive future.
* Auspicious: Favorable; promising success.
Remember to choose the word that best fits the context and nuance of your writing.