Colored Cells/Background In a Form

Does anyone know of a way to do this? If not, is there a workaround you might have used?

You can’t for the moment. There is an unsupported way to achieve this, but not supported so at your on risk : used html tag in rich text component. But take care, it’s not recommanded as this way to do could be interrupted without notice (not supported, so not supposed to happen).