Aussie to the rescue! Becci, I played around in CAP and was able to make a fully-colourable version of a pattern. I don't want to steal your design, so I'm giving you the steps to do it so you can make it and upload it yourself
. OK, here's what you do after you've placed your stickers:
1) If you want the background to recolour, you'll need to sacrifice one of your four main layers. I'd suggest making a sticker of a plain square in Paint, then stretching it and using it as a background. Don't worry if the bottom layer is occupied: If you've got less than three layers, which you do, click and drag on the bumpy bit next to 3 and you can move the layers up and down. Once you've applied your square to the bottom layer, it's time to move onto...
2) and 3)
STENCILS. Stencils, stencils, stencils. This is the
key for maximum recolouration. Basicially, clicking the stencil button (2) will turn all the stickers on that layer into flat blue shapes, like this:
Don't worry about the blue though: You can change the colour to whatever you like, as seen on (3). That's the beauty of it: Whatever colour you choose for your stencil will be used for the pattern in-game, and it always recolours
perfectly. So if you use stickers that don't have any important details on them, STENCIL.
4) Finally, click the little picture of the eye on any layers you aren't using to make them invisible. Ta dah, you're done! Oh, and one more thing:
5) Test it. Once you've exported the pattern, you can go to your Exports folder and copy-paste into your Downloads, which lets you install the pattern into your game with your launcher. From there, you can mess around with it, make sure it recolours properly, and maybe take some screenshots. Good luck, Becci!