4. Avoid Dark Colors in Outdoor Decorations Dark-colored balloons absorb heat quicker, causing them to contract, oxidize, and even break sooner. Instead, use light colors, which don't show as much wear and tear, especially under the sun. ( μπαλονια ) What I Do I try to convince clients to go with lighter colors for outdoor events, especially when it would be around noon with the strong sun. If there's a need for darker colors, inflate the balloons smaller than their original size, such as 9 inches instead of 11 inches, to reduce the risk of popping. 5. Keep Balloons in the Shade Leaving the balloons in direct sunlight is disastrous. Spending too much time in the sun causes them to oxidize, lose shine, shrink, and even pop. To Avoid This Position your decorations in places that are away from direct sunlight to prevent damage. If the client insists on placing balloons in direct sunlight, explain the possible downsides, such as the balloons bursting, fading quickly, and shrinking....