Hearthpwn

Type {{MANACOLOR=RED/GREEN}}, {{HEALTHCOLOR=RED/GREEN}}, or {{ATTACKCOLOR=RED/GREEN}} within the "card text" box.

red/green should be lowercase (color name only works for red and green since they exist in the game), you can also use hexadecimal colors like this {{MANACOLOR=#f442f4}}

also {{}} debug codes are full exempt from showing up on the card, spaces are not. if you'll use these make sure to not add spaces around it as it might displace the text.