wood making industry using dye is very common, Wood dyes are used for many applications. From finishing for making the stains, to toners that is applied for blending in different species of wood, to make the unmatched colors appear uniform in the same wood.
Furniture Stain Guide Floor stain colors, Oak floor stains
Stains and Colorants Used on Wood Floors - Hardwood Floors Magazine
Restor-A-Finish Howard Products
What Color Should I Stain My Wood Floors?
Dye Stain: Water Based, Low VOC
TransTints Liquid Dye - Printable Tip Sheet
Wood dyes - dye is applied for blending in different species of wood
5 Ways to Stain Wood at Home - FeltMagnet
Sample Stain Swatches up to 5 Five