Green dinosaurs and leaves already provide a strong color direction.
Pair them with white, beige, pale wood, gray, or black furniture. Avoid adding several unrelated bright colors.
Mix Several Green Tones
Light, medium, and dark greens can create depth.
Keep the surrounding textiles simple so the decal colors remain clear.
Add Monstera Leaves Selectively
Use larger leaves near the dinosaur and smaller leaves as fillers.
Do not spread large botanical elements across the entire room unless a wallpaper effect is intended.
Choose Neutral Bedding
White, cream, gray, sage, and simple stripes can support the watercolor design.
Busy dinosaur bedding may compete with the wall art.
Use Warm Wood
Natural wood adds warmth to green and white decor.
Avoid mixing too many different wood finishes in a small room.
Preserve the Watercolor Effect
Keep the wall around the design relatively open.
Strong frames, signs, and dark wall art may interrupt the soft painted appearance.
Conclusion
Pair watercolor dinosaurs with neutral furniture, controlled green tones, warm wood, and limited monstera leaves. A simple room palette will keep the mural soft and cohesive.