A similar product is Rustins wood dye: http://www.rustins.eu/Details.asp?ProductID=817 Like the Rustoleum stain it's an oil based stain, i.e., with pigments (although Rustins label it dye) and if you click on the Health & Safety button at the top of the page in the link I've provided above, scroll down to the Wood Dye line, you'll be able to find more information on the product by clicking on the options available. The chemical contents listed are similar to the Rustoleum product, bearing in mind that white spirits (UK terminology) and mineral spirits (US terminology) are the same thing.
Whether or not the colours you want are available in the Rustins product is something I can't tell. Slainte.