
Here’s a smart solar floating ball that emits changing colors at night. Government should invest in these and put them on the bayside waters such as under the Bay Bridge or Golden Gate Bridge to make use of the sunlight, providing nice glowing lights at night.
bay bridge, changing colors, Consumer, Cool, Design, Earth, Energy, Gadgets, golden gate, golden gate bridge, Government, lights, rainbow color, Solar, sunlight, water surfaceMain Features:
*Emitting rainbow color
*Color changing automatically
*Floating on water surface
*Fixable by the hole at bottom
*Totally sealed, waterproof
*Operating time up to 12 hours
*No wiring needed, wide application
I have an issue I hope someone can help me with. I am generating RRDtool graphs (for Cacti monitoring templates for MySQL, which I'll release soon) that have up to 11 different metrics on them. With that many lines or areas on a graph, it becomes very hard to pick colors that are easy to see and easy to distinguish from each other. What's a good way to choose such colors? Is there a way to do it automatically -- is there a formal method that will produce good results?
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