Outdoor wood paint/stain (Longwood HD3)

I am creating a fun space for young children to play and explore wildlife at my local Scout campsite. As part of that we have built play huts, benches and planters all of which need painting. I want the area to be bright and colourful, so I am after any left over outdoor wood paint you may have and in any colour. Your donations of paint will be greatly appreciated. Thank you for reading me post. Jo