The Alternative to Acid Stains Nano-Tech Waterbase Stains Zero VOC. There are 30 standard FX Nano stain colors, but any of the colors may be mixed together for customized results. It is highly recommended to test a small area first. This chart is for reference only. Actual color results will vary depending on surface conditions and other variables. Samples shown below were executed using 2 light coats. FX Nano Infused Stains come in the same colors as the FX Nano Stains.