What is the best color pattern for koi?

It takes up a lot of of time. If you want to do color guard, you have to commit to it. But just ask the coach or person in charge...

All of them will leak, but if you don't want flimsy paper, glue it to something like a piece of cardboard, cardstock or another piece of paper when it's dry....

Acrylic is a water-based color medium. While it will blend very well into the mod podge, it doesn't actually "stain" as much as the food dye. It also might melt...

You could say that, but it's easier to say, "His personal best." (That's a common sports phrase.)

Yes you can. You could add watonai goldfish to your pond, as they look beautiful in ponds.

No! Goldfish and koi are cold water fish, whereas rainbow sharks are tropical. They need completely different temperatures to survive and thrive.

They most likely placed mini koi fish in the resin. I believe you can buy some mini koi fish on Amazon.

You have to put the light color first and then put the darker color on top of it.

It sounds like you have over-toned. Stop dying your hair and it should fade back to a brighter hue. You could also try washing your hair with a clarifying shampoo...

The easiest way is to use concrete paint, allowing you to apply any color you want over the finished, hardened counter top.